CYMOPOLIA TUBERCULATA. 39 
ul 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 transverse bands of red, three of which cross the merus. 
The abdomen and sternum are granulated. 
Length, 13 mm. ; breadth, 18 mm.; length of ambulatory leg of second 
pair, 34 mm. (merus, 9.3 mm.; carpus, 5.6 mm.; propodus, 9 mm.; dactylus 
7.59 mm.). 
Station 3355. 182 fathoms. 4 males, 1 fem. 
Cymopola zonata Rathb.,* lately described from the Gulf of California, 
40 fathoms, differs from C. tuberculata as follows: the carapace is narrower 
and more quadrangular. The median lobes of the front are small and incon- 
spicuous, while the lateral lobes are very broad and are separated from the 
median lobes by a slight, shallow notch. In C. tuberculata the four frontal 
lobes take on the form of prominent, triangular teeth, clearly separated from 
each other by deep triangular sinuses. The antero-lateral margin of the 
carapace is three-toothed in C. zonata, four-toothed in C. tuberculata. The 
tubercles near the posterior margin of the carapace are more elongated in 
the former species than in the latter. The hand of the former is much 
broader, and is armed with prominent, spiny tubercles. Finally, the meri 
of the ambulatory legs are much shorter in C. zonata, and are armed at the 
distal end with a blunt, triangular tooth, while in C. fuberculata this tooth is 
transformed into a long, sharp spine, and a pair of smaller spines is present, 
one on each side of the proximal end of the carpus. 
The unique type specimen of Cymopolia dilatata A. M. Edw. + from St. 
Kitts, 208 fathoms, has not yet been returned to this Museum. Judging 
from Milne Edwards’s short diagnosis, it must be very similar to C. tuber- 
culata, but in the latter the first sternal segment does not bear the trans- 
verse crest which is said to be characteristic of C. dilatata. I am therefore 
led to regard C. tuberculata and C. dilatata as closely allied representative 
species on the two sides of the continent. 
* Proc. U. S. Nat. Mus., XVI. 259, 1893. 
+ Bull. Mus. Comp. Zool, VIII. 28, 1880. 
