158 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
which exiends backward nearly to the posterior border of the carapace. Antero- 
lateral margins of the carapace angulated below the orbit. Telson much 
shorter than the appendages of the sixth abdominal somite, broad, with a pair 
of dorsal longitudinal ribs, abruptly contracted a short way beyond the mid- 
dle; tip truncate, setiferous. 
The eyes are absent ; their peduncles are transformed into a pair of closely 
apposed trihedral processes, with acute and somewhat divergent tips. The 
first segment of the antennule is very long, reaching nearly to the end of the 
antennal scale; the second and third segments are, on the other hand, very 
short, the third bearing two flagella, the outer of which is very much shorter 
than the inner. 'The antennal scale is long and narrow, its outer margin 
lightly concave. 
Length, 28 mm. 
Station 201. Off Martinique. 565 fathoms. 1 9. 
The rostrum is proportionally smaller than in P. ommatosteres Wood-Mason,! 
while the dorsal teeth of the carapace are larger, more numerous, and extend 
farther back on the cephalothorax ; the telson is shorter; the antennal scale is 
longer than the proximal segment of the antennule. According to Wood- 
Mason, there is no trace of eyes or eye-stalks in P. ommatosteres. In P. pecti- 
nata there are distinct rudiments of the eye-stalks, as above described. 
P. ommatosteres comes from the Andaman Sea, 405 fathoms, and the Bay of 
Bengal, 200-350 fathoms. 
Glyphocrangon aculeata A.M. Epw. 
Station 29. 955 fathoms. ^ I specimen. 
* 103. 769 . 2 
„ 115 3/5 n d 
“ 190. 542 E 4 5 
„ 195. 5025 1 
% 260, D/R 4 2 
ee Valid, s O10, | 1 d 
5 
Glyphocrangon spinicauda A. M. Epw. 
Station 148. 208 fathoms. 2 specimens. 
* 274. 209 « 19 u 
„ 275. 218 pite 
p 281. 288 M vé 00 
1 Ann. Mag. Nat. Hist., 6th ser., Vol. VIII. p. 362, 1891; Journ. Asiatic Soe. 
Bengal, Vol LXIII. p. 152, 1894; Ill. Zool. R. I. M. S. Investigator," Crust., Pl. 
IX. Fig. 4, 1895. 
