PAGURISTES FECUNDUS. 67 
the rostrum and the lateral processes the anterior border is concave and 
thickened so as to form a rim. The anterior gastric lobes are clearly 
defined anteriorly. 
The ocular peduncles are long and cylindrical, reaching considerably 
beyond the antennal peduncle, but not quite so far as the antennular 
peduncle. The ophthalmic scales are of moderate size and bidentate at the 
tip, the external tooth very minute. The antennal acicle reaches almost to 
the end of the peduncle ; it is setose, and armed with six spines, two of which 
form a terminal fork, the others being marginal. The external prolongation 
of the second antennal segment is narrow, setose, and minutely spinulose ; 
there is, moreover, a spinule on the upper face of this segment behind the 
base of the acicle; the antennal flagellum is very short (about equal in 
length to the anterior section of the carapace). The third pair of mavilli- 
peds are closely approximated at their bases; their merus joints are armed 
with three or four denticles on the lower margin and one at the distal end 
of the upper margin. . 
The chelipeds are short and of like size and shape; the merus is smooth 
within, rugose without ; the two inferior margins armed with minute black- 
tipped spinules. The carpus is tomentose and spinulose, the largest spines 
occurring along the superior border ; the hand is both spinulose and pubes- 
cent, but the hair is less dense upon the fingers than upon the basal portion 
of the hand, which is short and swollen below. The fingers are short, exca- 
vated within, and terminate bluntly in dark, corneous nails. The ambula- 
tory limbs are pubescent, particularly on the upper and lower margins; 
the distal end of the merus, and also the carpus, propodite, and dactylus 
are armed with numerous spines, the most prominent of which are 
arranged in a row along the upper border of the carpus and propodite ; 
the dactylus is about equal in length to the propodite and carpus together. 
The legs of the fourth pair are furnished with long hairs on their upper mar- 
gin, and there are a few spines on the upper margin of the carpus; the pro- 
podite is rather longer than the dactylus, and the rasping surface on its lower 
margin occupies two thirds of its length. The last pair of legs are much less 
hairy than the preceding pair; the rasping surface, which is truncate pos- 
teriorly, falls a little short of reaching the middle of the hand. The telson 
is divided by a pair of lateral incisions and a median one into four lobes, 
those on the left side the larger; the pair of terminal lobes are obscurely 
toothed on their margins. 
