240 bulletin: museum of comparative zoology. 



less slender and are distinctly uncate at tip in contrast with the con- 

 dition in C. Jafior, which may show a slight uncation of the inferior proc- 

 ess only. These two processes are much more nearly parallel, less 

 divergent, than in C. latior. The dorsal process is of nearly uniform 

 width throughout and is broadly rounded at the tip as in C. ramsdcni 

 but is much longer than in that species, not strongly curved distally 

 as in C. latior, this being apparently an easy mark of recognition. 



The lateral margin of each third keel bears a weak serration, that of 

 fourth a distinct one, that of fifth and sixth weak ones again, the 

 others none. The angulation of the keels as in latior. 



The dorsum in general black excepting for the yellow keels; a 

 reddish yellow stripe along the caudal border of each tergite which is 

 somewhat widest at the middle. Anterior half of each prozonite also 

 light in color. In a few of the most caudal tergites (e. g., nineteenth, 

 eighteenth, and seventeenth) the caudal border black with a light 

 stripe between this and the main black area of the plate. First 

 tergite bordered all around with light and a light median longitudinal 

 line dividing the dark central area more or less into two halves. Head 

 black excepting below as usual. 



This is a proportionately more slender species than C. latior. 



Length (male type), near 46 mm.; width, 6.8 mm. 



It is possible that the differences shown by the type-specimen may 

 not be sufficient to maintain this form as distinct from C. latior; 

 but until ample material allows this to be definitely determined, it 

 seems better to maintain this as a separate species. 



204. CUBODESMUS PELOPLEURUS, sp. nOV. 



Tijpe.— M. C. Z. 4,519. d*. Paratypcs.— M. C. Z. 4,.520 9. 

 Cuba: Oriente Province, Belona, January 16, 1914. C. T. Ramsden. 



In coloration this species is seen at a glance to differ conspicuously 

 from the others here described in having the black color of the pro- 

 zonites continued ventrad nearly to the level of the legs. The meta- 

 zonites are also dark below the keels, though not black. Dorsum 

 black excepting the keels which are yellow. The tergites are either 

 not at all, or else only very narrowly margined with lighter color along 

 caudal edge. The prozonites are lighter in a very narrow line along 

 anterior margin. The first tergite is yellow over the keels and in a 

 narrow anterior line but not along the decidedly incurved caudal 

 margin. The black of head extending between antennae and expand- 



