MUSEUM OF COMPARATIVE ZOOLOGY. 193 
Uroptychus bellus, sp. nov. 
Carapace broad, branchial regions inflated, upper surface naked, smooth, 
and polished ; the branchio-cardiac lines meet in the median line of the 
carapace ; the anterior margin has a concavity above the eye, forming an orbit 
with a spinule at its external angle. There is one spine at the antero-lateral 
angle, one on the margin of the hepatic area, and eight on the margin of the 
branchial region; the branchial spines decrease in size posteriorly. The 
rostrum is long, tapering, acute at the apex, and concave at the base above. 
The abdomen is smooth, the pleurz subacute. The eyestalks are short and 
stout, the eye not wider than the peduncle, black. The antenne are very 
slender, shorter than the carapace, the acicle considerably shorter than the 
peduncle. Chelipeds very long, naked except for a few sete on the fingers, 
polished; the ischium bears a spine on the superior margin and several others 
on the lower side ; the merus and carpus are armed with spines arranged in 
longitudinal rows ; there is a row of spines on the upper margin of the pro- 
podus (the row is double at the proximal end), another series on the outer face 
reaching from the proximal end about half-way to the distal end, and another 
still shorter row of more rudimentary spines just outside the latter series; 
the fingers are separated by a gap; their prehensile edges are denticulate, 
with one or more prominent teeth near the base of the dactylus. Ambulatory 
appendages : meri and carpi of the first and second pairs spinulose along the 
upper edge, these joints being spineless on the third pair. All of the ambu- 
latory appendages are subchelate, the distal end of the propodus being enlarged 
and furnished with spines against which the spined dactylus closes. 
Length (male), 17 mm. ; carapace, 10.5 mm.; rostrum, 4.5 mm. ; breadth of 
carapace, 7.7 mm. ; cheliped, 31 mm.; merus, 7 mm.; carpus, 9 mm.; chela, 
14 mm. ; dactylus, 5 mm. 
Station 3354. 322 fathoms. 1 female ovig. 
“« ~—- 3355. «182 e 1 male. 
Family AXIIDZ. 
Axius crista-galli, sp. nov. 
Near Aaius acutifrons (Eiconaxius acutifrons Bate), but differs in the fol- 
lowing regards. The margin of the rostrum is armed with prominent teeth. 
The median carina of the rostrum, entire or at most but slightly serrate in the 
former species, is here cut into about seven prominent teeth. The larger claw 
differs from the corresponding organ in A. acutifrons in lacking the serration 
on the superior margin of the propodus, in the presence of a strong tubercle 
on the anterior border of the hand between the bases of the fingers, and in the 
absence of prominent teeth on the prehensile edges of the fingers. 
Length, 24.5 mm.; length of carapace, 10 mm. 
Station 3359. 465 fathoms. 3 males, 1 female. 
The female carries eighteen eggs of large size (2 & 1.5 mm.). 
