270 Messrs. J. Wood-Mason and A. Alcock on 



gular plate, terminating apically in a strongish forwardly- 

 inclined spine ; in the dorsal spine being shorter and more 

 recurved ; in the lower of the two postero-lateral spines being 

 reduced to a minute point ; in the dorsal spines of the first 

 abdominal somite being subequal, those of the second sepa- 

 rated by a distinct transverse groove and the hinder of them 

 more detiexed, and those of the third, fourth, and fifth larger 

 and more distinctly arched anteriorly ; in the form of the 

 pleura of the five basal somites, which are expanded at their 

 posterior margin into a thin and rounded foliaceous lobe, 

 having their marginal spines as a consequence closer together. 

 A single immature female (the last pair of incubatory 

 lamellffi only 3 millim. long), measuring 92 millim. from end 

 of rostrum (extreme tip wanting) to apex of telson, and 

 coloured in life deep purple-lake, was taken at Station 117, 

 1748 fathoms. 



Family Eucopiidse. 

 EUCOPIA, Dana, G. O. Sars. 



3. Eucopia australisj Dana, Sars. 



Eucopia australis, Dana, U. S. Explor. Exped., Crustacea, pt. i. p. 009, 

 Atlas, pi. xi. tig. 11, a-m; (Jr. O. Sars, 'Challenger' Schizopoda, 

 1885, p. 55, pis. ix. and x. 



Chalaraspis umjuiculata, Willemoes-Suhm, Trans. Linn. Soc. Lond., 

 Zool. ser. 2, vol. i. 1875, p. 37, pi. viii. 



A soft and somewhat distorted young female with very 

 incompletely developed brood-pouch, nou-pigmented eyes, and 

 eye-peduncles, through the walls of which the subjacent 

 ophthalmic tract is plainly visible by transparence, as in 

 Sars's figure, was obtained at Station 112, 561 fathoms; and 

 a mature, or all but mature, female with integuments of 

 firmer consistence, red-pigmented eyes, and opaque eye- 

 peduncles, at Station 109, 738 fathoms. But whether we 

 have here to do with two distinct species, or only with two 

 different conditions of one and the same species, the material 

 at our disposal is insufficient to enable me to determine. 



Family Euphausiidae. 



Thysanopoda, H. M.-Edw. 



4. Thysanopoda microphthalma, G. O. Sars, 

 Thysanopoda microphthalma, G. O. Sars, * Challenger ' Schizopoda, 

 1885, p. 1 10, woodcut, fig. 3, 5 . 



An adult male, without legs, from Station 111, 1644 

 fathoms, is probably referable to this species. 



