MUSEUM OF COMPAEATIVE ZOOLOGY. 179 



the abdomen bears spines only on the second segment, and the abdominal 

 segments are not so mnch sculptured. 



Munida gracilipes, sp. nov. 



Carapace rather flat and quadrangular. Lateral spines of rostrum less than 

 one half the length of the rostrum, shorter than the ocular peduncle. Four 

 spinules on the gastric area arranged in the form of a square, — two behind each 

 lateral rostral spine ; a longitudinal row of obsolescent spinules in the median 

 line from base of rostrum to the cardiac area ; one spine on the cardiac region, 

 a pair on the intestinal region, and one on each side of the cardiac region just 

 back of the cervical suture. The lateral margins of the carapace are armed 

 with about seven spines, the first of which is the largest. The second abdomi- 

 nal segment is armed with a transverse row of six spines, the third with a row 

 of four, the fourth with a row of four and one median spine behind the trans- 

 verse row. This is the normal arrangement, but in one specimen out of the 

 four there is an additional pair of spines on the second and third segments back 

 of the transverse row. The pleurae of the third, fourth, and fifth abdominal 

 segments are acute. Eyes very large, reniform. The chelipeds are very long 

 and slender, the merus spinose (the chief of the spines being on the inner side 

 of the joint) ; the carpus also is spinose. The hand has about eight spines on 

 the upper margin and one on the lower ; there are several acute spines on the 

 outer border of the movable finger, the cutting edges of the fingers are straight, 

 finely denticulated or spinulose. 



Length, 24 mm.; breadth, 8 mm.; length of cheliped, 34 mm. 



Station 3391. 153 fathoms. 4 specimens. 



This species is very near to M. stimpsoni A. M. Edw., but the carapace is 

 flatter, less granulated, more quadrangular in outline, with more evident trans- 

 verse rugae ; the lateral rostral horns are shorter, the eye larger, the transverse 

 ridges on the abdominal somites fewer in number; the lateral spines of the 

 carapace and the abdominal spines are better developed, the cardiac area nar- 

 rower and bounded by more distinct furrows. 



Munida microphthalma A. M. Edw. ? 

 Bull. Mus, Comp. ZooL, VIII. 51, 1880. 



Station 3370. 134 fathoms. 1 female ovig. Length, 20 mm. 



Only one specimen of M. microphthalma has been returned to this Museum 

 from Paris. It is a very small specimen, without chelipeds. The " Albatross " 

 specimen differs from this one in having the rostral median spine less upturned. 

 The chela, compared with that of M. microphthalma, as figured by Henderson 

 (Rep. Challenger Anomura, Plate III. Fig. 4), has no spine on the outer mar- 

 gin of the dactylus, and the row of spines on the outer face of the hand is 

 obsolete. 



vol xxiv. — no. 7. 3 



