1926] Schmitt, Crustaceans Collected by the Congo Expedition O38 
la . cookt the median rostral point of the front is more prominent 
and more‘pointed than the lateral projections, extending half its length 
beyond them. In C. africanus the median projection is no more conspicu- 
ous than the lateral ones, nor does it extend forward in advance of them. | 
The anterior portion of the carapace is laterally thickly haired in the 
former and the median gastric region is always more or less roughened; 
in the latter the antero-lateral region carries only a few scattered hairs 
and the median gastric region is smooth. 
Measured from the orbital margin to the end of the cornea, the eye- 
stalks of C. cooki are as long as the anterior portion of the carapace 
measured in the same line from the orbital margin backward. The eye- 
stalks of C. africanus are shorter than the anterior portion of the cara- 
pace by the length of the cornea, and for their length the eye-stalks are 
- Fig. 72. Clibanarius cooki Rathbun, from Banana. 
Lateral aspect of second left ambulatory leg. X 2:5. 
distally more dilated and slightly stouter throughout than in C. cookv. 
When extended, the eye-stalks and antennular peduncles of C. cooki 
are subequal, while in C. africanus the eye-stalks are shorter by the 
length of the cornea. 7 
The hands of C. africanus are irregularly rather coarsely tuberculate 
with blunt more or less rounded tubercles; the intervening spaces are 
rather closely filled with granulations of varying sizes. In C. cookz the 
more or less pointed or spiniform tubercles are distinct and the interven- 
ing spaces smooth. The upper margin of the carpus of the chelipeds of 
the latter has a slight furrow or groove between two rows of scaliform 
tubercles from the anterior margins of which tufts of long hair arise; 
the anterior scale of the inner of the two rows of each carpus carries a 
strong, anteriorly directed spine. In C. africanus there is a similarly 
placed spine, but behind it is a row of strong, posteriorly diminishing 
spines, often bifid or twinned, forming the inner margin of the external 
surface of the carpus. Further, the upper margin of the merus of afri- 
canus carries anteriorly a small inverted triangular patch of close-set 
