MUSEUM OF COMPARATIVE ZOOLOGY. 161 



of the carapace, the dactylus lonj^er than the propodus. The last two pairs of 

 legs terminate in short recurved claws, which are setose on the posterior edge. 

 The sexes do not seem to differ in any marked degree. 



Length of carapace (male), 9.3 mm.; breadth, 8 mm. 



Station 3370. 134 fathoms. 3 females. 

 3380. 899 " 2 males. 



This species is nearly related to j^. abyssicola Smith, but its carapace does 

 not diminish so much in width anteriorly, the external frontal spines are less 

 developed, the external orbital spine is much longer and brought forward so 

 that the orbits face more to the front. From ^. challengeri Miers it differs in 

 the greater development of the frontal and external orbital spines. 



Cymopolia tuberculata, sp. nov. 



Carapace very broad, subpentagonal, branchial regions swollen. Front four- 

 toothed, the teeth blunt, separated from each other by narrow sinuses which 

 are rounded at the bottom ; the two middle teeth are longer than the lateral 

 ones, and the median sinus is deeper than the two lateral. The anteio-lateral 

 margin of the carapace is four-toothed, counting the prominent tooth at the 

 external angle of the orbit ; the posterior tooth of the series is the smallest. 

 The upper margin of the orbit has three deep fissures defining two triangular 

 teeth ; the lower margin of the orbit has two fissures enclosing a broad trun- 

 cate tooth or lobe; there is also abroad and prominent lobe just below the 

 inner orbital angle ; above this lobe is a single tooth at the inner angle. The 

 surface of the carapace is ornamented with granulated tubercles; the parts be- 

 tween the tubercles are more finely granulated, and when viewed under a lens 

 are found to be furnished with fine hairs. The chief tubercles are disposed as 

 follows: one pair on the frontal region behind the margin; four in a transverse 

 row on the anterior part of the gastric area, and five on the posterior part of the 

 same area arranged thus : * : ; of these the posterior pair is the smallest ; four 

 in a transverse line on the cardiac region and one median behind the transverse 

 series; about six on each branchial area ; six just anterior to the straight pos- 

 terior margin of the carapace (three on each side). There are three small 

 tubercles on each eye-stalk near the margin of the cornea. The chelipeds are 

 small, slender, equal ; the carpus tuberculose, the fingers as long as the hand 

 proper, curved downward and inward, crossing at the tip, their prehensile 

 edges finely denticulate in small specimens, nearly entire in larger ones. The 

 second and third ambulatory limbs are very long, the second slightly longer 

 than the third ; their merus joints are granulated and costate above, and armed 

 with a prominent spine at the antero-distal angle and a smaller one each side 

 at the point of articulation with the carpus ; this holds good of all three pairs 

 of ambulatorj'' appendages; the carpi are carinate on their anterior margin, 

 with a vestige of a tooth at each end of the carina ; the anterior edge of the 

 propodus is also carinate. The ambulatory legs are ornamented with trans- 



