192 BULLETIN OF THE 



Uroptychus nitidus occidentalis, subsp. nov. 



Differs from the typical Uroptychus nitidus (A. M. Edw.) 1 as follows : the 

 branchial regions are more swollen, giving to the posterior half of the carapace 

 a more convex lateral outline; the rostrum is shorter, the chelipeds shorter 

 and more robust, the fingers shorter in proportion to the length of the basal 

 part of the propodus ; the branchial regions are more distinctly margined. 

 It approaches in some respects U. uncifer (A. M. Edw.), in which the rostrum 

 and chelipeds are still shorter. In some specimens of occidentalis there are a 

 few low tubercles on the inner side of the proximal end of the merus and 

 ischium of the chelipeds, — a condition similar to that in U. australis Hend. 

 which may be considered a variety of U. nitidus. U. politus Hend., another 

 closely related form, is distinguished by its short antennal acicle. 



Length of body of a female, 29 mm. ; length of carapace, 15 mm. ; length 

 of rostrum, 4 mm. ; breadth of carapace between antero-lateral spines, 5 mm. • 

 breadth across the branchial region, 10 mm. ; length of cheliped, 44.5 mm. ; 

 merus, 11 mm. ; carpus, 12.5 mm. ; chela, 17.5 mm. ; dactylus, 6 mm. 



Station 3384. 458 fathoms. 2 males, 2 females ovig. 



Uroptychus pubescens, sp. nov. 



Carapace, without including rostrum, broader than long, pubescent ; a 

 transverse row of spines across the gastric region from one side of the carapace 

 to the other ; lateral border of carapace spinulose ; the anterior margin 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 downward a little, 

 acute, with entire setiferous margins. Eye small, not broader than the eye- 

 stalk, with brown pigment. Abdomen naked, smooth, pleura? subacute. 

 Antenna? 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 ; propodus not broader than the carpus ; carpus 

 equal in length to the basal portion of the propodus ; fingers straight, a slight 

 tooth near the base of the dactylus ; the tips of the fingers cross. Meri of am- 

 bulatory legs minutely spinulose on the superior margin, distal end of propo- 

 dus spiniform on the hind margin, whole hind margin of dactylus armed with 

 spines; all the joints of the ambulatory limbs are 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. 2 females ovig. 

 " 3355. 182 " 1 female ovig. 



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

 described species. 



i Bull. Mus. Comp. Zool., VIII. 62, 1880. 



