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



letely canaliculate down the middle of the disc, closely, very minutely 

 punctate. Elytra short, rapidly narrowed from near the base, 

 about reaching the middle of the wings, rather coarsely, confusedly 

 punctate and distinctly costate, the apices minutely punctate. 

 Length 5J mm. ($ ?.) 



Hab. Mexico {Truqui, in Mus. Brit.). 



One specimen. This species has the head and pro- 

 thorax shaped very much as in M. ingens, but the antennae 

 are formed as M. brevipennis and its alHes, and the elytra 

 are very short and rapidly narrowed posteriorly. M. 

 subcostatus, Schaeff., from Arizona, must be an allied form 

 with the head black, except in front. 



3. Malthinus laticeps. 



Malthinus laticeps, Gorh., Biol. Centr.-Am., Coleopt. iii, 2, 

 p. 103, pi. 6, fig. 14 (c^). 



Hab. Guatemala, Calderas on the slope of the Volcan 

 de Fuego. 



The type of this species is the unique male figured, the 

 others quoted from San Geronimo, etc., belonging else- 

 where. It has the basal joint of the antennae, the palpi, 

 mandibles, and legs, the outer margins of the prothorax, 

 the sides of the body beneath, and the abdomen in part, 

 testaceous, a large spot at the apex of each elytron yellow, 

 and the rest of the body piceous. Antennae much larger 

 than the body, comparatively stout ; head broad, the eyes 

 very large ; prothorax small ; elytra extending to a little 

 beyond the middle of the wings, vaguely punctulate and 

 subcostate, 



4. Malthinus melanocerus, n. sp. 



(J. Nigro-piceous, the points of insertion of the antennae, the 

 mandibles, the margins of the prothorax, the legs, and the abdomen 

 in part, testaceous, the elytra fuscous, with a large yellow sjiot at 

 the apex. Head together with the moderately large prominent 

 eyes about as wide as the elytra, obliquely narrowed posteriorly, 

 densely, very minutely punctate, thus appearing subopaque ; an- 

 tennae slender, longer than the body. Prothorax small, gradually 

 narrowed anteriorly, shining, sparsely, very minutely punctate. 

 Elytra reaching to about the middle of the wings, vaguely punctu- 

 late. Penultimate dorsal segment of the abdomen truncate at 



