PACHYSCHELUS. 147 



smaller, acute, obliquely directed outwards ; the fifth (next to the central line) is of 

 nearly the same form as the fourth (fig. 13). 



23. Pachyschelus astraeus. 



Oblongo-ovalis, brevis, convexus, nitidns; capite thoraceque cupreo-aureis ; elytris cyaneo-seruginosis, basi 



purpureo-tinctis, sat fortiter punctatis. 

 Long. 1| lin. 



Hab. Mexico, Cordova (Salle), Atoyac in Vera Cruz (H. H. Smith). 



This is a very short convex species, about one-fifth longer than broad. The head 

 and thorax are brassy-golden, tinted with coppery towards the sides, with small punc- 

 tures scattered over the surface. The scutellum is brownish-seneous. The elytra are 

 very convex, just below the scutellum ; almost parallel from the base to a trifle beyond 

 the middle, and then very obliquely narrowed to the apex, with lines of moderately 

 strong punctures, the intervals almost smooth. 



A single specimen from Cuernavaca in Morelos (H. H. Smith) differs from the others 

 in being distinctly narrower, and in having the elytra more strongly punctured, the 

 intervals also having more distinct punctures. 



All the examples are females. 



24. Pachyschelus modestus. (Tab. VIII. fig. 14.) 



Ovalis, leviter convexus, sat nitidus ; capite thoraceque nigro-cyaneis, confertim evidenter punctatis ; scutello 



nigro ; elytris cyaneis, striato-punctatis. 

 Long. 1| lin. 



Hab. Panama, Bugaba (Champion). 



This is a somewhat broad, regularly ovate species, a little more narrowed behind 

 than in front. The thorax is very obscure blackish-blue, with the margins vaguely 

 tinted with purple ; it is very densely and rather strongly punctured all over. The 

 elytra at the base are as broad as the base of the thorax, a little wider below the 

 shoulders, and then arcuately narrowed to the apex, obscure blue, appearing slightly 

 dull green in some aspects, with slight purple tints at the margins ; their convexity is 

 not very great. The terminal segment of the abdomen of the male is gently sinuate 

 on each side, rounded at the apex, and furnished with about eighteen short, not very 

 acute teeth, and with some smaller and less definite ones at each end of the series 

 (fig. 14). A female specimen from Volcan de Chiriqui has the purple on the elytra 

 more extended. 



A single female example from David in Chiriqui (Champion) differs from the one 

 described above in having the head and lateral margins of the thorax bright green, 

 and the green on the thorax limited by a coppery line drawn from the posterior angle 

 to the middle of the anterior margin. This may be a distinct species. 



U2 



