PYLOPAGURUS LONGIMANUS. 61 
PYLOPAGURUS A. M. Epw. et Bovy. 
Bull. Soc. Philomath. de Paris, 8°™* Sér., III. 108, 1891 (type species mentioned — Expagurus 
discoidalis A. M. Edw.) ; Mem. Mus. Comp. Zodl., Vol. XIV., No. 3, p. 74, 1893 (genus described). 
Hight species of Pylopagurus have hitherto been described, all of them 
restricted to the West Indian region with the exception of one species, 
P. wngulatus (Studer), which has been found also near the Cape of Good 
Hope. They inhabit moderate depths (20-508 fathoms). Three species 
were secured during the “ Albatross” Expedition, all of them closely allied 
to West Indian forms. 
Fylopagurus longimanus Fax. 
Plate XII. Fig. 1-1. 
Bull. Mus. Comp. Zodl., XXTV. 168, 1893. 
Carapace smooth, naked, polished, very convex from side to side; ros- 
trum short, triangular, subacute, advanced further than the rounded lateral 
angles. Abdomen longer than the cephalo-thorax. Eye-stalks equal in 
length to the first two segments of the antennular peduncle, smooth, pol- 
ished, with a few sete on the dorsal face. Ophthalmic segment uncovered. 
Ophthalmic scales separated by a considerable interval, triangular, their tips 
split in a horizontal plane so that they end in two acute teeth, one above 
the other, the lower tooth the longer. Last segment of the antennular 
peduncle very long and slender (much longer than the eye-stalk), with long 
setee on its lower side. Second segment of antennal peduncle armed with a 
small and acute median tooth at the distal end of the dorsal face, and pro- 
longed into a short and broad triangular external process; third segment 
robust, reaching nearly to the end of the eye-stalk ; distal segment long and 
slender; flagellum setose, reaching to the distal end of the carpus of the 
larger cheliped when this appendage is extended ; antennal acicle reaching 
the end of the eye, curved upward, and furnished with many long sete, 
especially on the superior border and near the tip. The right cheliped 
attains an enormous size, much exceeding the whole body in length; the 
outer face of the merus is nearly smooth, but the lower and inner faces of 
this segment are granulated; the carpus is very large, equalling in length 
all the preceding segments combined ; it broadens gradually from the proxi- 
mal to the distal end, is subquadrate in shape, the height equalling the 
