PLATE XVI. (Crustacea, PLATE XLII.)

Nasinatalis disjunctipes, n.g. et sp.

n.s., n.s. Lines indicating the natural size of the adjoining figures, the upper representing a specimen in dorsal view, the lower a smaller specimen in ventral view. To the right of the latter is a more enlarged portion of the front in dorsal view, showing the position of the first antennæ, a.s., a.s., in relation to the eyes.

Pl. s., 5-7. The fifth, sixth, and seventh segments of the pleon of the uppermost figure in dorsal view.

mxp. 3, D., mxp. 3, L., mxp. 3, V. The dorsal or inner, the lateral, and the ventral or outer aspects of the third maxillipeds.

br., br. Two of the branchia, each showing two biseriate plumes connected only at the base.

prp. 1, prp. 2, prp. 5. The first peræopod or cheliped, the second, and the fifth

peræopods.