134 Mr. G. C. Champion's Revision of the Mexican 



black, the pro thorax itself less transverse, the securiform apical 

 joint of the maxillary palpi broader in both sexes, the terminal 

 dorsal segment of the abdomen of the male larger, and the genital 

 armature very different, see Plate VII, figs. 41, 41a. 



Hob. Panama, Chiriqui. 



Two males and two females seen. 



Belotus. 



Belolus, Gorham, Biol. Centr.-Am., Coleopt. iii, 2, pp. 99 



(1881), 308 (1885) (sine descr.). 

 Lobetus, Leconte, Trans. Am. Ent. Soc. ix, pp. 58, 59 {nee 



Kiesen wetter). 



The type of this genus is Malthinus abdominalis, Lee, 

 a species ranging from the Southern United States to 

 Panama and perhaps further southward, and various other 

 allied Tropical American forms belong here. Its principal 

 characters are the simple antennae and tarsal claws, the 

 toothed mandibles, the stout subsecuriform apical joint of 

 the palpi, the greatly abbreviated elytra, the emarginate 

 penultimate dorsal segment of the abdomen, the sub quad- 

 rate prothorax, the moderately developed head, and the 

 asymmetric genital armature, the various lobes covered 

 ventrally by an oval convex cap, as in Chauliognathus. 

 In two of the species the penultimate dorsal segment of 

 the abdomen is formed much as in the females of various 

 Ichthyuri. Pic has described several species of Belotus 

 from South America. 



1. Belotus abdominalis. 



Malthinus abdominalis, Lee, Proc. Acad. Phil, v, p. 347 



(1851). 

 Lobetus abdominalis, Lee, Trans. Am. Ent. Soc. ix, p. 59. 

 Belotus abdominalis, Gorh., Biol. Centr.-Am., Coleopt. iii, 



2, pp. 99, 308, pi. 6, fig. 8 ($) (part.). 

 Belotus fuscus, var., Gorh., loc. cit. 

 Belotus abdominalis, var. obscurior. Pic, Melanges exot.- 



entom., fasc. vii, p. 19 (Sept. 1913). 



Hab. Southern United States ; Mexico ; Guatemala ; 

 Honduras, Ruatan Island; Panama. 



Sent in abundance from Teapa in Tabasco. The variety 

 with the prothorax infuscate to near the base has been 



