Annals of the South African Museum, Volume 21The Museum, 1927 - Natual history |
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Page 7
... rays are indicated , the former by roman , the latter by arabic , numerals . Thus D VIII.10 means that there is 1 dorsal fin composed of 8 spines and 10 soft rays . If there are 2 separate dorsal fins the numbers are separated by a + ...
... rays are indicated , the former by roman , the latter by arabic , numerals . Thus D VIII.10 means that there is 1 dorsal fin composed of 8 spines and 10 soft rays . If there are 2 separate dorsal fins the numbers are separated by a + ...
Page 55
... rays ; the 1st gill is supported entirely by rays from the lower half ( ceratohyal ) of the cartilage in front of the 1st gill - slit . Key to the South African families . I. No electric organs ( Batoidei ) . A. Dorsal and caudal fins ...
... rays ; the 1st gill is supported entirely by rays from the lower half ( ceratohyal ) of the cartilage in front of the 1st gill - slit . Key to the South African families . I. No electric organs ( Batoidei ) . A. Dorsal and caudal fins ...
Page 72
... rays is needed . Key to the South African genera . 1. Disc about as broad as long . a . Tail long , with serrated spine b . Tail short , without serrated spine 2. Disc much broader than long . Tail very short Gen. DASY BATIS Raf ...
... rays is needed . Key to the South African genera . 1. Disc about as broad as long . a . Tail long , with serrated spine b . Tail short , without serrated spine 2. Disc much broader than long . Tail very short Gen. DASY BATIS Raf ...
Page 77
... rays of the pectoral fins contiguous in front of snout . Pelvics small , not notched . Tail very long , whip - like ... Rays grow to a considerable size , and like the Sting - Rays VOL . XXI , PART 1 . 6 frequently inflict bad wounds ...
... rays of the pectoral fins contiguous in front of snout . Pelvics small , not notched . Tail very long , whip - like ... Rays grow to a considerable size , and like the Sting - Rays VOL . XXI , PART 1 . 6 frequently inflict bad wounds ...
Page 78
... Rays ( ante p . 75 ) on the dangerous nature of the wounds apply here also . They are inhabitants of all warmer seas , and their food consists chiefly of Molluscs , for the breaking and grinding the shells of which their teeth are ...
... Rays ( ante p . 75 ) on the dangerous nature of the wounds apply here also . They are inhabitants of all warmer seas , and their food consists chiefly of Molluscs , for the breaking and grinding the shells of which their teeth are ...
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Common terms and phrases
1st dorsal absent adult Agulhas Bank Air-bladder anal fins arch band Barbel Biol blackish Bleeker Branchiostegals Brit canines Cape caudal fin caudal peduncle Colour Colour.-Silvery compressed ctenoid Cuvier and Valenciennes cycloid dark Delagoa Bay Depth of body dorsal and anal dorsal fin Dorsal spines Durban Mus fathoms Fish genus Gilchrist and Thompson Gill Gill-membranes Gill-rakers gill-slits Günther hind margin Hist Ichthyol interorbital width Jordan Lacépède Lateral line length of body length of head Length.-Up Locality.-Natal coast Locality.-Off lower jaw margin of eye Maxilla Maxilla reaching mouth Natal nostril opercle palatine Photophores Plate Poiss posterior premaxilla preopercle preorbital Proc Pseudobranchiae Pyloric caeca Regan Scales scaly serrated silvery slightly snout soft dorsal South African Museum South African species specimens spinous dorsal spots Surv synonymy tail teeth U.S. Nat upper jaw vent vertical villiform vomer Zool