30 Bulletin, Vanderlilt Marine Museum, Vol. Ill 



and three much larger ones adjacent to the base; inside these teeth 

 are placed a patch of setae at the base of the hinge, followed by a 

 row consisting of seven subequal and subequally spaced tufts of setae. 



The right chela is much smaller than the left; has the meral and 

 carpal joints less swollen, narrowed, and the hand and fingers a mini- 

 ature replica in contour of those of the left chela, but the fingers are 

 more broadly spoon-shaped. The first and second ambulatories are 

 subequal, those of the right side having the meral and carpal joints 

 equal in young or only a very little longer in large adults than those 

 of the left side — this being another item in which the present species 

 differs from C. chilensis Milne Edwards and C. ohscurus Stimpson, 

 in which the above discussed joints of the right legs are described as 

 being much longer. 



The fourth ambulatory legs are short, flattened, curved to fit the 

 body contour and have the upper and lower margins of all joints 

 densely fringed with long, feather-like setae. The broad, subovate 

 "fixed finger" of the terminal joint is lamellar and has the outer sur- 

 face mosaiced with squamose, golden yellow scales. A row of these 

 squamosities on the outer surface of the movable finger parallels the 

 margin of the meeting surfaces. 



The fifth legs are longer, slenderer, less lamellar and more cylin- 

 drical than the fourth pair; they have the basal four joints arched; 

 the propodus is no wider than the carpus and about one-fourth longer ; 

 the finger is about one-fourth of the length of the propodus ; the pro- 

 podus on the upper and distal three-fourths of the outer surface bears 

 a patch of golden squamosities and the hinged finger bears a longi- 

 tudinal row of these, paralleling its inner margin. The carpus and 

 especially the propodus and daetylus bear clusters of long setae, but 

 these, while abundant and close-set, stand out more individually than 

 do the feathery hair masses on the fourth legs. The paired, circular 

 genital apertures of the male are situated on the ventral surface of the 

 coxal joint of the fifth legs; the paired genital apertures of the fe- 

 male are located on the ventral surface of the second pair of ambula- 

 tory legs. 



The abdomen is toughly membranous, asymmetrical, coiled and 

 tapering ; telson and terminal abdominal segments calcified. The last 

 abdominal segment is squarish ; the telson is transversely segmented, 

 with the anterior portion deeply channelled longitudinally in the me- 

 dian area, the posterior margin somewhat rounded at the lateral 

 angles; the posterior portion of the telson is a trifle longer than the 



