no 



BULLETIN 166, UNITED STATES NATIONAL MUSEUM 



dorsal face of the carapace and are advanced as two rostral teeth. 

 Antennae short and folded under the front. A subspiniform tubercle 

 on each side on the front part of the branchial region. A V-shaped 

 notch in upper margin of orbit. Ocular peduncles with a deep rounded 



Figure 26.—Clythrocerus nitidus, female (M. C. Z.): a, Dorsal, X3; b, front view, X6. After Smith. 



sinus above and dilated in corneal region, at the summit of which 

 there is a slight, pointed tubercle. Chelipeds of male very large; 

 arm smooth, much exceeding the carapace; carpus with a small 

 obtuse tooth on inner margin; palm flat above and very thick; 

 fingers shorter than palm, incurved, gaping in proximal half, some 



Figure 27.— ClythroceTusnitidm, male: a, Dorsal, X2 (approx.); 6, cephalic region, ventral (left maxilliped 

 removed), X7 (approx.). After A. Milne Edwards and Bouvier. 



hairs on inner surface. Ambulatory legs rounded like the chelipeds, 

 not flattened; smooth and ending in a dactyl slightly arcuate and 

 styliform. The first leg reaches the middle of the palmar portion of 

 cheliped and the m.iddle of the dactyl of the following pair. The last 

 two legs do not surpass the distal part of the merus of the preceding. 



Measurements. — Male (66848), length of carapace to tip of spine 9.5, 

 width 10.3 mm. 



Range. — South Carolina to west Florida and Grenada; 6)2 to 262 

 fathoms. 



Material examined. — See table 35, page 112. 



