140 SEEEICOENIA. 



to the apex, with a well-marked impression below the shoulder ; there are some lines of 

 small punctures, with some smaller punctures here and there in the interstices. In 

 the specimen with the brassy thorax from Capetillo these lines of punctures are almost 

 entirely wanting. 



A single example from Cordova, Mexico (Salle), with purple elytra may be referable 

 to this species ; but it has the elytra a trifle sinuate at the sides below the shoulders 

 and the lines of punctures not very distinct. 



This species is very close to the preceding, but is distinguished by the more parallel 

 elytra. 



4. Pachyschelus hydroporoides. 



Ovalis, convexus, niger, nitidus ; capite thoracisque lateribus parce subtiliter punctatis ; elytris evidenter 



erebre punctatis, postice arcuatim angustatis. 

 Long. 1 1 lin. 



Hab. Beitish Hondueas, R. Hondo, Belize (Blancaneaux) ; Guatemala, Chacoj and 

 San Geronimo in Vera Paz (Champion) ; Costa Rica ( Van Patten) ; Panama, Volcan de 

 Chiriqui 3000 to 4000 feet (Champion). 



This is a very convex and regularly oval species, calling to mind various Hydropori of 

 the E. lepidus group ; but it is rather broader than the last-mentioned insect. The 

 head and thorax are not so shining as the elytra, with some very fine punctures scat- 

 tered over the surface, except in the middle of the thorax. The elytra are moderately 

 strongly punctured, the punctures placed more or less in lines ; the impression below 

 the shoulder is very slight. 



Two examples, one from San Geronimo and one from Belize, have the head slightly 

 brassy. 



All the specimens appear to be females. 



5. Pachyschelus ovalis. 



Ovalis, convexus, niger, nitidus ; capite aureo-aeneo; fchorace viridi-cyaneo, punctato ; scutello Beiieo ; elytris 



cyaneis, vage striato-punctatis. 

 Long. 1| lin. 



Hab. Beitish Hondueas, R. Hondo (Blancaneaux) ; Guatemala, San Geronimo and 

 Chiacam in Vera Paz, El Tumbador 2500 feet (Champion). 



This species closely resembles the preceding ; it differs, however, in coloration and in 

 having the thorax rather strongly punctured, not only at the sides but on the disc as 

 well, the punctures not very widely separated from each other. 



A single example from Mexico, Guerrero (Edge), appears to be referable to this 

 species, but has the head dark green. 



