GEN. TETRALIA, Dana.

1851. Tetralia, Dana, Silliman's Journ. Sci. and Arts, Ser. 2, vol. xii., p. 128.

1900. T., Alcock, Journ. Asiat. Soc. Bengal, vol. lxvii., pp. 76, 223.

TETRALIA GLABERRIMA (Herbst).

1790. Cancer glaberrimus, Herbst, Krabben und Krebse, vol. i., pt. 8, p. 262, pl. 20, fig. 115.

1843. Trapezia glaberrima, Krauss, Südafrik. Crust., p. 35.

From the coast of Natal.

1852. Tetralia g., Dana, U.S. Expl. Exp., vol. xiii., p. 263, pl. 16, fig. 3.

1898. Alcock, J. A. S. B., vol. lxvii., p. 223.

FAMILY PORTUNIDÆ.

1899. Portunidæ, Alcock, Journ. Asiat. Soc. Bengal, vol. lxviii., pt. 2, pp. 4, 5.

1908. P., Stebbing, S.A. Crustacea, pt. 4, p. 8.

Alcock divides the family into four sub-families-Carcininæ, Portuninæ, Caphyrinæ, Lupinæ.

GEN. PORTUMNUS, Leach.

1814. Portumnus, Leach, Edinb. Encycl., vol. vii., p. 429 (the name mentioned on p. 391).

1838. Xaiva, McLeay, Annulosa of S. Africa, p. 62.

1886. Portumnus, Miers, Challenger Brachyura, p. 170.

1899. P., Alcock, J. A. S. B., vol. lxviii., p. 7.

PORTUMNUS PULCHELLUS (McLeay).

1838. Xaiva pulchella, McLeay, Annulosa of S. Africa, p. 62, pl.3. 1843. X. p., Krauss, Südafrik. Crust., p. 27.

Krauss only observes that he has not found this species.

GEN. OVALIPES, Rathbun.

1833. Anisopus, de Haan (preocc.), Crust. Japonica, decas prima, p. 13.

1838. A., McLeay, Annulosa of S. Africa, p. 62.

1843. A., Krauss, Südafrik. Crust., p. 27.

1898. Ovalipes, Rathbun, Proc. U.S. Mus., vol. xxi., p. 597. 1902. O., Stebbing, S.A. Crustacea, pt. 2., p. 12.

*OVALIPES TRIMACULATUS (de Haan).

1833. Corystes (Anisopus) trimaculata, de Haan, Crust. Japon., decas prima, p. 13.

Obtained by Dr. Horstok from the shore of the Cape of

Good Hope.

1838. A. trimaculatus, McLeay, Annulosa of S. Africa, p. 62. 1843. A. t., Krauss, Südafrik. Crust., pp. 12, 27.

Very common in Table Bay.

1902. Ovalipes t., Stebbing, S.A. Crustacea, pt. 2, p. 13. No. 58, sent by Dr. Gilchrist, from False Bay.

1904. O. t., Doflein, Valdivia Brachyura, p. 92, pl. 32, fig. 6. Cape Agulhas, from 80 m. depth; Algoa Bay, at 40 m.; Port Elizabeth, Natal.

GEN. CHARYBDIS, de Haan.

1833. Charybdis, de Haan, Crust. Japonica, decas prima, p. 10. 1902. C., Stebbing, S.A. Crustacea, pt. 2, p. 9.

CHARYBDIS CRUCIATUS (Herbst).

1794. Cancer cruciatus Herbst, Krabben und Krebse, vol. ii., pt. 5,

p. 155, pl. 8, fig. 3, pl. 38, fig. 1.

1902. Charybdis c., Stebbing, S.A. Crustacea, pt. 2, p. 9.

No. 154, sent by Dr. Gilchrist, from Port Alfred.

CHARYBDIS SEXDENTATA (Herbst).

1783. Cancer sexdentatus, Herbst, Krabben und Krebse, vol. i., pts. 2-5, p. 153, pl. 7, fig. 2.

1906. Charybdis japonica, Rathbun, Bull. U.S. Fish. Comm. for 1903, pt. 3, p. 872, pl. 13, fig. 2.

1907. C. j., Rathbun, Smithson. Misc. Coll., vol. xlix., p. 81 footnote. Miss Rathbun quotes A. Milne Edwards (Goniosoma japonicum, Arch. Mus. Hist. Nat. Paris, vol. x., p. 373, 1861) as authority for this specific name, given as a correction of Stimpson's "Charybdis sexdentata (Herbst) de Haan." In 1887 de Man, J. Linn. Soc., vol. xxii. No. 137, pp. 85, 88, discusses "Goniosoma japonicum, de Haan," implying that the species is de Haan's sexdentatus, not Herbst's.

1908. C. sexdentata, Stebbing, S.A. Crustacea, pt. 4, p. 10. From the Durban Museum.

CHARYBDIS NATATOR (Herbst).

1794. Cancer natator, Herbst, Krabben und Krebse, vol. ii., pt. 5, p. 156, pl. 40, fig. 1.

1843. Charybdis granulatus, Krauss, Südafrik. Crust., p. 24. In Natal Bay at low tide.

1908. C. natator, Stebbing, S.A. Crustacea, pt. 4, p. 9, pls. 28, 29 (Annals S.A. Mus., vol. vi., pls. 2, 3). Durban Museum.

CHARYBDIS SMITHII, McLeay.

1838. Charybdis smithii, McLeay, Annulosa of S. Africa, p. 61. 1843. C. s., Krauss, Südafrik. Crust., p. 24.

Krauss merely mentions the species, on which I have not yet found any light thrown by subsequent authors.

GEN. LUPA, Leach.

1813. Lupa, Leach, Edinb. Encycl., vol. vii., p. 390.

1899. Neptunus, Alcock, Journ. Asiat. Soc. Bengal, vol. Ixviii. pt. 2, pp. 11, 28.

1908. Lupa, Stebbing, S.A. Crustacea, pt. 4, p. 11.

LUPA PELAGICA (Linn.).

1758. Cancer pelagicus, Linn., Syst. Nat., ed. 10, p. 626. 1813. Lupa pelagica, Leach, Edinb. Encycl., vol. vii., p. 390. 1908. L. p., Stebbing, S.A. Crustacea, pt. 4, p. 12.

Durban Museum.

* LUPA SANGUINOLENTA (Herbst).

1783. Cancer sanguinolentus, Herbst, vol. i., pts. 2-5, p. 161, pl. 8, figs. 56, 57.

1902. Lupa sanguinolenta, Stebbing, S.A. Crustacea, pt. 2, p. 11. No. 31, obtained by Dr. Gilchrist two and a half miles off Cape St. Blaize, Durban, Natal.

GEN. ACHELOUS, de Haan.

1833. Achelous, de Haan, Crustacea Japonica, decas prima, p. 8.

ACHELOUS CRASSIMANUS, McLeay.

1838. Achelous crassimanus, McLeay, Annulosa of S. Africa, p. 61. McLeay follows the brief descriptions by the note: "This large crab has a shell which is about five inches long by seven wide. The teeth of the cephalothorax are triangular, sharp, and nearly equal. The fore-feet are nearly equal in size. The abdomen of male has seven joints. It has been only known, as yet, to occur in deep holes, which it makes in the mud islands near the mouth of the Zwartkops River-islands that are only visible at low water."

1843. A. c., Krauss, Südafrik. Crust., p. 23.

Krauss adds nothing to McLeay's account, except that the mouth of the Zwartkop is in the district Uitenhage. In the immediately following notice of Charybdis smithii, he declares that McLeay never specifies the locality at which a species was found, although the case of Achelous crassimanus is an obvious exception. It is not improbable that Alcock's suggestion may be right (J. A. S. B., vol. lxviii., p. 28) that McLeay's species is a synonym of Scylla serrata (Forskål). But the pleon of the male in that genus is of five segments, while in McLeay's species it is said to be of seven.

GEN. SCYLLA, de Haan.

1833. Scylla, de Haan, Crustacea Japonica, decas prima, p. 11. 1899. S., Alcock, Journ. Asiat. Soc. Bengal, vol. lxviii., pt. 2, p. 27.

SCYLLA SERRATA (Forskål).

1775. Cancer serratus, Forskål, Descript. Anim. in itin. orientali, p. 90.

1843. Scylla serrata, Krauss, Südafrik. Crust., pp. 12, 25.

This species is at home at the mouths of some little brooks in Natal Bay, where it digs large and deep holes in the mud among the roots of Rhizophora mucronata, Lam., and Bruguiera gymnorhiza, Lam."

Krauss also declares it to be the largest and strongest species among the South African Crustacea, giving its breadth as six inches one line and length as four inches two lines. These measurements are inferior to those given by McLeay for his Achelous crassimanus. But Krauss's account on the whole makes it almost certain that McLeay's species should be included under Forskål's, the chief doubt arising from the

circumstance that Krauss himself, on p. 20, as well as on pp. 23, 25, keeps them distinct, without a hint of their probable identity.

1893. S. s., Stebbing, History of Crustacea, p. 69.

1899. S. s., Alcock, J. A. S. B., vol. lxviii., pt. 2, p. 27.

In 1847 the List of Crustacea in the British Museum, drawn up by Adam White, contains the entry at p. 26: "Scylla crussimanus. Achelous c., Macleay, Ann. S. Afr., 61. Female. S. Africa (mouth of the Zwartkops River). Presented by Dr. Andrew Smith."

GEN. THALAMITA, Latreille.

1829. Thalamita, Latreille, Règne Animal, éd. 2, vol. iv., p. 33, footnote.

1899. T., Alcock, Journ. Asiat. Soc. Bengal, vol. lxviii., pt. 2, pp. 11, 72.

THALAMITA ADMETE (Herbst).

1803. Cancer admete, Herbst, Krabben und Krebse, vol. iii., pt. 3, p. 40, pl. 57, fig. 1.

1843. Thalamita a., Krauss, Südafrik. Crust., p. 24.

Krauss distinguishes var. a and var. b, both from Natal Bay.

1899. T. admeta, Alcock, J. A. S. B., vol. lxviii., pp. 74, 82.

THALAMITA PRYMNA (Herbst).

1803. Cancer prymna, Herbst, Krabben und Krebse, vol. iii., pt. 3, p. 41, pl. 57, fig.2.

1843. Thalamita p., Krauss, Südafrik. Crust., p. 25.

From Natal Bay.

1899. T. p., Alcock, J. A. S. B., vol. lxviii., pp. 73, 78.

THALAMITA CRENATA, Milne-Edwards.

1834. Thalamita crenata, Milne-Edwards, Hist. Nat. Crust., vol. i., p. 461.

1843. T. c., Krauss, Südafrik. Crust., p. 25.

Krauss observes that he found this and the two preceding species "on the sandy places of Natal Bay in depressions under timber and pieces of rock, where they appear to have their permanent location; for on them all occurred now and again young species of Balanus radiatus, Br., which is found