162 STALK-EYED CRUSTACEA. 
connected with the eye, on the dorsal surface of the ocular peduncle. In 
the two specimens from the “ Albatross” collection of 1891, this ocellus does 
not exist. At the corresponding point the integument of the peduncle 
invades the eye to a slight degree, forming a notch in the otherwise entire 
outline of the eye, but no part of the cornea is thereby cut off from the 
main eye. 
Acanthephyra approxima Barr? 
Rep. Challenger Macrura, p. 755, Plate CXXVI. Fig. 8, 1888. 
Station 3384. 458 fathoms. 2 specimens. 
« =. 3.388. 1168 1 specimen. 
< 3408. 384 6 specimens. 
Bate’s description of A. approvima was based on a unique specimen ob- 
tained in Sarmiento Channel, Patagonia (400 fathoms). The rostrum of 
this specimen is broken off just in front of the seventh dorsal tooth, which 
lies directly over the posterior tooth of the lower margin. The four posterior 
teeth of the upper margin are more closely set together than the three 
anterior ones. In the specimens from the “ Albatross” collection the rostrum 
is a little shorter than the carapace, and is armed with from eight to ten 
teeth above, four to seven below; the posterior teeth of the upper margin 
are not so closely set as in Bate’s type specimen, so that the posterior tooth 
of the lower margin underlies the fifth or the sixth superior tooth, or else 
the interval between these teeth. The integument is thin and membranous 
—a character not specified by Bate in his description of A. approxima. The 
posterior angles of the pleure of the fifth abdominal segment are rather 
sharper than indicated in Bate’s figure, and the eye is narrower. The telson 
is furnished with a few pairs of very minute dorsal spines, which tend to 
become obsolete in many specimens. 
Acanthephyra cristata Fax. 
Plate XUAT sabig: Alas 
Bull. Mus. Comp. Zoél., XXIV. 206, 1893. 
The rostrum, measured from the tip to the hind border of the orbit, is 
three quarters the length of the rest of the carapace, measured from the 
hind wall of the orbit to the hind border of the carapace in the median 
dorsal line; its upper margin rises into a prominent crest, which continues 
backward over the anterior part of the gastric region, and sinks into a blunt 
