174 BULLETIN OF THE 
spines occurring along the superior border; the hand is both spinulose and 
pubescent, 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, excavated within, and terminate bluntly in a dark corneous nail. The 
ambulatory limbs are pubescent, particularly on the upper and lower mar- 
gins; the distal end of the merus, and also the carpus, propodus, and dac- 
tylus, are armed with numerous spines; the most prominent of these spines 
are arranged in a row along the upper border of the carpus and propodus ; the 
area about equal in length to the propodus and carpus together. The legs 
of the fourth pair are furnished with long hairs on their upper margin, and 
there are a few spines on the upper margin of the carpus; the propodus 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 is much less hairy 
than the preceding pair; the rasping surface, which is truncate posteriorly, 
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. 
Length of carapace, 9.5 mm.; breadth, 7 mm.; length of ocular peduncle, 
4mm. 
Station 3368. 66 fathoms. 2 females ovig. 
This species is nearly related to P. lymani A. M. Edw. et Bouv.,! of the 
West Indian region, and to P. subpilosus Hend.,? of New Zealand. From the 
former it is distinguished by the more prominent and acute rostrum which 
overhangs the ocular segment, by the smaller number of spines on the antennal 
acicle, and by the armature of the telson, the margin of which is ornamented 
with obscure teeth, while in P. lymani it is furnished with numerous spines 
whose tips are horny and dark colored, From P. subpilosus it differs in having 
shorter eyestalks and antennal acicle, fewer spines on the antennal acicle, a 
longer and narrower external prolongation of the second joint of the antenna, 
and a differently shaped telson. 
The ovisacs of both specimens are large and filled with eggs, 
Family PORCELLANIDZE. 
Petrolisthes agassizii, sp. nov. 
In the shape of the carapace and the front this species bears a close resem- 
blance to Petrolisthes sexspinosus (Gibbes) and P. occidentalis Stimps., but the 
transverse ridges are more broken anteriorly, while posteriorly they extend 
without interruption across the whole width of the carapace, being here more 
perfectly developed than in the two species above named, The carpus and claw, 
1 Mem. Mus. Comp. Zoöl., XIV. No. 3, p 49, Plate IV. Figs. 13-22, 1893. 
2 Challenger Anomura, p. 77, Plate VIII. Figs. 2, 2 a, 1888. 
