444 SERRICOfiNIA. 



Var. The elytra rufous, with the sides, base, and apex broadly and indeterminately piceous. 



Hah. Mexico, Chilpancingo (Hoge). 



Of the eleven specimens examined, ten belong to the typical form and one to the 

 variety. A specimen from Amula is figured. 



9. Esthesopus nitidulus. 



Esthesopus nitidulus, Cand. Monogr. Elat. iii. p. 279 l . 



Hah. Mexico 1 , Jalapa, Juquila {Edge), Temax in North Yucatan (Gaunter); 

 British Honduras, R. Sarstoon (Blancaneaux) ; Panama, Bugaba (Champion). 



A single specimen from each locality. In this species the thorax is very little 

 narrowed in front, and the elytra are subparallel in their basal half. The thorax is 

 sparsely and somewhat coarsely punctured throughout, with a few excessively minute 

 punctures intermixed (the latter being only visible under a high magnifying-power), 

 and without trace of basal sulci. The pubescence is very sparse and fusco-cinereous in 

 colour. The extreme apex of the elytra is sometimes reddish, and the abdomen in 

 some specimens is partly or entirely rufous. The single example from British Honduras 

 is larger and much more elongate than the others. The type of E. nitidulus has not 

 been seen by me. Our specimens vary from 4J-8 millim. in length. 



10. Esthesopus breviusculus. (Tab. XIX. fig. 25.) 



Bather short and broad, robust, shining, sparsely pubescent ; reddish-brown, the legs and antennae testaceous. 

 Head thickly, rather coarsely punctate ; antenna? slender, short, not extending beyond the hind angles of 

 the prothorax. Prothorax feebly convex, flattened on the disc towards the base, broader than long, the 

 sides parallel behind and gradually arcuately converging in front ; the hind angles not or feebly divergent, 

 obtuse, excavate above for the reception of the humeri ; the surface somewhat sparsely and moderately 

 finely punctate throughout, without smaller punctures intermixed ; the base sinuate on either side and 

 without sulci ; the marginal carina entire. Scutellum convex in front. Elytra moderately convex, two 

 and one-half times the length of the prothorax, and slightly wider than it at the base, gradually widening 

 to about the middle and arcuately narrowing thence to the apex, the humeri subangular in front ; deeply 

 punctate-striate, the interstices convex, flatter towards the suture, and somewhat thickly punctured. 

 Beneath thickly, rather coarsely punctate, without intermixed finer punctures. Fourth tarsal joint 

 strongly lamellate. Claws rectangularly dilated from the middle to the base. 



Length 5|-6J, breadth 2±-2± millim. 



Hah. Mexico, Acapulco (Hoge). 



Two specimens, probably sexes, one being much broader than the other. This 

 species has the thorax flattened on the disc behind and the elytra rather convex. The 

 punctuation above and beneath is uniform, without smaller punctures intermixed. 

 E. hreviusculus is perhaps nearest allied to E. nitidulus, from which it differs in its 

 more convex and less parallel elytra, the elytra themselves being slightly wider than 

 the thorax. The punctuation of the thorax is similar. 



