30 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 89 



ment 20, uniform chestnut-brown throughout, as are the antennae and 

 legs ; poriferous segments with the entire keels and some of the ad- 

 jacent area of the dorsum white. The median line of the body is 

 darkened by the internal ganglion showing through the body wall. 



Head with a very deep median furrow on the vertex. 



Segments with the keels well developed and without any teeth on 

 the caudal margin as ascribed to members of this genus. Pore swell- 

 ing long and thick (fig. 14, a). 



Gonopods as shown in figure 14, b. 



Sternum between the third legs of the male with two small, for- 

 wardly directed processes. The fourth sternum with processes more 

 rounded and not produced forward. 



T3'^^.— U.S.N.M. no. 1097. 



ANTILLODESMUS VINCENTI (Pocock) 



Odontopeltis v'mcenti Pocock, Journ. Linn. Soc. London, vol. 24, p. 514, 1894. 

 A. grenadanus Chamberlin, Bull. Mus. Comp. Zool., vol. 62, pp. 236, 237, 1918. 



Three males and three females were collected in Grenada, February 

 10, 1932. 



Comparison of my Grenada specimens with Chamberlin's descrip- 

 tion of A. grenadanus and Pocock's description and figures of 



Fig. 15. — AiitUlodcsimis vinccnti. Gonopod. 



Odontopeltis vincenti leads to the conclusion that but one species is 

 involved. 



The living color of the animals is chestnut-brown with the keels 

 and a triangular area on each segment yellow, the base of the triangle 

 extending along the posterior margin contrary to the description of 

 A. grenadanus, but Pocock stated that the color varies considerably, 

 so that differences in color pattern are of little weight. 



One of the gonopods is shown in figure 15. 



