286 Major A. Alcock and Capt. A. R. S. Anderson on 



Family Pasiphaeidae. 

 Pasiph^a, Savigny, Edw. 



Pasipheea unispinosa, Wood-Mason. 



Pasipheea unispinosa, Wood- Mason, Ann. & Mag. Nat. Hist., Feb. 



1893, pp. 163, 164 ; Illustrations Zoology ' Investigator,' Crustacea, 



pt. i. 1894, pi. iii. fig. 7, $ . 

 Pasipheeia cristata americana, Faxon, Bull. Mas. Comp. Zool. vol. xxiv. 



p. 208, Aug. 1893. 

 Pasipheeia americana, Faxon, Mem. Mus. Comp. Zool. vol. xviii. 



pp. 173-175, pi. xlv. figs. 1-1 e (1895). 



Our specimens, both the types and that taken this season, 

 agree in all particulars with Faxon's lucid, concise, and very 

 careful description of Pasipheeia americana. 



One large female, 116 millim. from anterior end of carapace 

 to end of telson, the terminal few millim. of which are 

 wanting, was taken at Station 229, 360 fathoms. 



Family Homaridae. 



Nephropsis, Wood-Mason. 



Nephropsis Steward, Wood-Mason. 

 Nephropsis Stewarti, Wood-Mason, Journ. Asiat. Soc. Bengal, vol. xlii. 

 pt. ii. 1873, p. 39, pi. iv., and Ann. & Mag. Nat. Hist. (4) xii. 1873, 

 p. 59 ; A. Milne-Edwards, Ann. Sci. Nat. Zool. (5) xix. pi. xx. 

 figs. 1-3 ; Alcock & Anderson, Journ. Asiat. Soc. Bengal, vol. lxiii. 

 pt. ii. 1894, p. 161 ; Anderson, Journ. Asiat. Soc. Bengal, vol. lxv. 

 pt. ii. 1896, p. 96 ; III. Zool. ' Investigator,' Crustacea, pt. iv. 

 pi. xxvii. figs. 1, 1 a (1896). 



In this species, as in Nephropsis atlantica, the lateral 

 rostral spines are variable in position. In one of the males 

 captured this year, instead of being as usual in the posterior, 

 the spines are situated in the anterior half of the rostrum, 

 which is short, slightly curved, and very similar to the 

 rostrum of Nephropsis Carpenteri. In consequence of the 

 shortness of the rostrum the antennulary peduncles equal it 

 in length. 



Two males, one from Station 229, 360 fathoms, the other 

 from Station 233, 185 fathoms. 



Colours in life : upper surface of abdomen very pale orange, 

 extreme outer border of terga bright red, pleura? white ; inner 

 leaf of swimmeret bright red, outer leaf white, bordered by 

 pale orange ; upper surface of posterior f of carapace orange, 

 suddenly changing to bright red in the anterior \ and rostrum ; 

 sides of carapace white ; the two small dorsal tubercles 

 and the faint ridge joining them white ; antennular base 



