102 STALK-EYED CRUSTACEA. 
has a deep concavity above the eye, outer angle of the concavity armed with 
a spine. Rostrum one half as long as the rest of the carapace, bent down- 
ward a little, acute, with entire setiferous margins. Eye small, not broader 
than the eye-stalk, with brown pigment. Abdomen naked, smooth, pleuree 
subacute. Antenne equal in length to the carapace with the rostrum ; acicle 
shorter than the peduncle. Chelipeds long, all the joints as far as the fingers 
spinulose, the spinules with broad bases; propodite not broader than the 
carpus; carpus equal in length to the basal portion of the propodite ; 
fingers straight, a slight tooth near the base of the dactylus; the tips of the 
fingers cross. Meri of ambulatory legs minutely spinulose on the superior 
margin, distal end of propodite spiniferous on the hind margin, whole hind 
margin of dactylus armed with spines ; all the joints of the ambulatory limbs 
furnished with long sete. 
Length (female), 44 mm. ; breadth, 17.5 mm.; length of carapace, 
21 mm.; length of rostrum, 7.5 mm.; length of cheliped, 57 mm. (merus, 
12 mm., carpus, 15 mm., chela, 24 mm., dactylus, 9.8 mm.). 
Station 3354. 322 fathoms. 2 fem. ovig. 
« = 835. = 182 ue 1 fem. ovig. 
This species is more nearly related to U. insignis Hend. than to any other 
described species. 
Uroptychus bellus Fax. 
Plate XX VI, Fig. 2, 2", 2. 
Uroptychus bellus Fax., Bull. Mus. Comp. Zool., XXIV. 193, 1893. 
Diptychus bellus A. M. Epw. et Bouv., Ann. Sci. Nat., Zool., 7¢™¢ Sér., XVI. 306, 1894. 
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 of the carapace, and ten or eleven on the lateral margin ; 
the lateral spines decrease in size posteriorly. The rostrum is long, taper- 
ing, acute at the apex, and concave at the base above. The abdomen 
is smooth, the pleurze subacute. The eye-stalks are short and stout, the 
eye not wider than the peduncle, black. The antennex 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 
EE 
