MUSEUM OF COMPARATIVE ZOOLOGY. 161 
of the carapace, the dactylus longer 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. 
s° 3380. +899 % 2 males. 
This species is nearly related to AY. 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 4. 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 antero-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 a broad 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 Jens 
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 ambulatory 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- 
