102 



STALK-EYED CRUSTACEA. 



-i 



M 

 '^ 





V 



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 httle, acute, with entire setiferous margins. Eye small, not broader 

 than the eye-stalk, with brown pigment. Abdomen naked, smooth, pleurae 

 subacute. Antenna) equal in length to the carapace with the rostrum j aciclc 

 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; 

 finf^-ers strai<^ht, a slight tooth near the base of the dactylus ; the tips of the 



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fino-ers 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 setae. 



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, 9.3 mm.). 



; 



Station 3354. 322 fathoms. 



u 



3355. 182 



ii 



2 fem. ovig. 

 1 fem. ovig. 



This species is more nearly related to U. insignis Hend. than to any other 

 described species. 



TJroptychus bellus Eax. 



Plate XXVL, Fig. 2, 2% 2\ 



9 



TJroptychm hellm Pax., Bull. Mus. Comp. ZooL, XXIV. 193, 1893. 



Diptychus bellus A. M. Edw. et Bouv., Ann. Sci. Nat., Zool., 7^"^*= Scr., XVI. 306, 180J;. 



-V 



J-: 



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 pleurae subacute. The eye-stalks arc short and stout, the 

 eye not wider than the peduncle, black. The antennse are very slender, 

 shorter than the carapace, the acicle considerably shorter than the peduncle. 

 Chelipeds very long, naked except for a few seta) on the fingers, polished ; 

 the ischium bears a spine on the superior margin and several others on the 



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