﻿234 LE CONTE SYNOPSIS OF THE 



1. E. cribosa, brevis inflata, purpureo-picea, thorace varioloso, antice ad medium paulo deplanato, 

 elytris connatis, subreticulatis, longitudinaliter obsolete sulcatis. Long. -65. 

 Le Conte, Pros. Acad. Nat. Sc. Philadelphia, 7, 217. 

 Tostegoptera cribrosa Lee. ibid. 6, 231. 



Texas, valley of the Rio Grande ; collected by Messrs. Schott and Clark, of the 

 U. S. and Mexican Boundary Survey. Body convex, stout, ovate in the female, 

 oblong in the male, purplish black. Head scabrous, flat, finely margined, faintly 

 emarginate in front ; frontal suture not visible. Thorax nearly twice as wide as the 

 head, sides much rounded, serrate, sparsely ciliate, narrowed towards the base ; disc 

 very coarsely and confluently punctured, at the middle slightly flattened, with some 

 smooth polished spaces around the flattened portion. Scutellum transverse, smooth. 

 Elytra ventricose, subsulcate, and covered with shallow fovese, giving a reticulated 

 appearance, suture not more elevated than the rest. Pygidium sparsely coarsely 

 punctured. Body beneath shining ; sternum very coarsely punctured, with very short 

 hairs proceeding from the punctures ; sides and the abdomen sparsely punctured and 

 slightly hairy. 



2. E. ve n t r i co sa, atra convexa, thorace lateribus rotundatis serratis, medio subangulatis, confertim 

 grosse punctata, callo dorsali pone medium laevi, disco antice vix obsolete impresso, elytris connatis 

 subsulcatis, confluenter minus profunde punctatis, interstitiis sublsevibus. Long. -9. 

 Lee. Proc. Acad. Nat. Sc. Phil. 7, 217. 

 Tostegoptera ventricosa Lee. ibid. 6, 440. 



Eagle Pass, Texas ; two females collected by Mr. Schott. Differs from the pre- 

 ceding by the head being more rounded and less scabrous, with the frontal suture 

 slightly visible ; by the thorax being less coarsely but more densely punctured, and 

 having a dorsal smooth space behind the middle. The elytra are more distinctly 

 sulcate, and are rather punctured than reticulate. The body beneath is sculptured 

 as in Eu. cribrosa. 



Endrosa Lee. 



Antennse 9-articulatae, articulis 3 — 5 connatis, longitudine sequalibus, clava triarticulata; palpi maxillares 

 articulo ultimo elongato, cylindrico, labiales articulo ultimo ovali ; labrum bilobum, ligula (cum mento) sub- 

 rotundata, concava, antice profunde acute emarginata. Mandibulae crassse prominulas. Tibia? posteriores 

 coronatse ; tarsi elongati, postici articulo lmo paulo breviore, unguiculi dente magno ad medium armati ; 

 calcaria postica sexus utriusque libera. 



This genus is represented only by Melolontha q u e r c u s Knock, and a new species 

 having the appearance of the Lachnosternse of group V, but differing in several 

 respects, the principal of which are the emarginate clypeus and deeply incised ligula. 

 The posterior spurs of the male are free, elongated, flattened and obtuse ; the penul- 

 timate segment of the abdomen is protuberant and impressed at the middle, the last 

 segment is short, and not impressed, as in the Lachnosternre of division C, 



