OF AMERICA NORTH OF MEXICO. 21 



HELIOMANES, Nm. 



Caput breve. 



Antennaj pubescentes, filiformes, 11-arlicuIatae, % valde elongatae. 



Palpi breviores, articulo ultimo ovali, labiales brevissimi. 



Thorax lateribus rotundatus, depresiusculus. 



Acetabula antica extus angulata. 



Elytra abbreviata, apice rotundata. 



Tarsi postici articulo l""" paulo elongate. 



This genus leads off to the Callidia, with which it agrees in the form of its thorax 

 and the shortness of the palpi. It appears to have very little relation with the square 

 headed species of Necydalis with which it has usually been associated. The club of 

 the femora is larger than in the preceding genera, being half of their entire length. 



1. H. OBScuRus. — Niger, cinereo-pubescens ; thorace grosse punctato, obsolete 3-calloso : elytris oblique 



impressis, sat dense punctatis, glabris testaceis, apice margineque plus minusve nigris. Long. -2 — 32. 



Pennsylvania, New York, Georgia, Missouri Territory. Abundant on the flowers 

 of ConiHS Jiorida. 



2. H. coRNi. — Niger, cinereo-pubescens ; thorace grosse punctato, Isete rufo obsolete calloso ; elytris 



profundius oblique impressis, glabris, punctatis macula magna testaeea ad suturam extendente. 



Long. -25. 

 Molorchus corni, Hentz. Ms. 

 M. ruficoUis, Dej. Cat. 



Alabama, Carolina; rare. 



OBRIUM. 



Phyton, Nm. Diozodes, Hald. 



Antennae filiformes, 11-articulatas, versus basin pilosse. 



Palpi prominuli, articulo ultimo longiore, cylindrico. 



Thorax basi valde, antice modice constrictus, lateribus subtub«""culatis. 



Abdomen articulo 1™° longissimo. 



Elytra abdomine non breviora apice rotundata, depressa. 



Acetabula antica rotundata. 



I do not know why Phi/ton, Nm., has been separated from' this genus. 



1. 0. RUBiDUM. — Testaceo-rufum, capita thoraceque obscuris, dense punctatis, hoc postice minus angustato; 

 dorso utrinque calloso; elytris convexiusculis, laevigatis, punctis paucis piliferis, basi oblique profunde 

 impressis. Long. -36. 



Dr. Zeigler gave me this insect as having been found in Pennsylvania, but from 

 the manner in which it is pinned I have some doubt of its being American. 



