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



and another, P. pitsillus (Say), reaching the highlands of 

 Central Mexico. A description of the Mexican insect is 

 appended, Horn's brief diagnosis of P. pusillus not quite 

 tallying with that of Leconte and Say.* Pseudebaeus is 

 the only genus known as yet from Mexico with appendiculate 

 elytra in the male. It was unknown to Gorham. 



1. Pseudebaeus pusillus. (Plate II, figs. 18, 18a, ^.) 



Malachius pusillus, Say, Journ. Acad. Phil, v, p. 170 



(1825). 

 Ebaeus pusillus, Lee, Proc. Acad. Phil. 1852, p. 167. 

 Pseudebaeus pusillus, Horn, Trans. Am. Ent. Soc. iv, 



pp. 118, 119 (1872). 



Moderately elongate, narrow, the head and the middle of the disc 

 of the prothorax shining, the rest of the upper surface opaque and 

 densely, minutely shagreened ; black, the elytra violaceous or green- 

 ish, the four or five basal joints of the antennae, the legs (except 

 the extreme base of the posterior femora in some examples), and 

 the prolonged apical callosities of the elytra of the (^, testaceous or 

 flavous ; clothed with very fine, ashy, sericeous pubescence. Head 

 pohshed, obsoletely punctulate, including the eyes as wide as the 

 prothorax in (J, arcuately depressed in front and sulcate between 

 the eyes anteriorly in c?, transversely depressed in front in $; 

 antennae slender, long, very feebly serrate, joints 5-10 gradually 

 decreasing in length. Prothorax broader than long, strongly 

 rounded at the sides anteriorly, obliquely narrowed behind, obsoletely 

 foveate before the base. Elytra much broader than the prothorax, 

 ample, covering the abdomen, subparallel and callose at the tip 

 in (^, widened posteriorly and with the apices conjointly rounded 

 in $, the humeri tumid. Legs long and slender in both sexes. 



(J. Elytral callosities oblong, very prominent, the apices each 

 produced into a broad, vertical, flap-like appendage, enclosing the 

 long, sinuous, inwardly directed hook, the upper margin of the 

 vertical plate narrowly cleft and bifid as seen from in front or 

 behind (fig. 18a). 



Length 2|-2i mm. (cj $.) 



Hab. Southern United States; Mexico, Puebla 

 {Truqui, in Mus. Brit., ^'^•, Mus. Oxon., $). 



The above description was drawn up from one male and 

 six females from " Mexico " (one only of which is labelled 

 with a definite locality) before the identification with the 



* He gives the elytra as black, instead of bluish or bluish-green. 



