1853.] ' S57 



of the genus yet discovered. It is more regularly and obtusely rounded poste- 

 riorly than the other species. The head is more prolonged, and the third jo.nt 

 of the antennae is only half as long as the fourth. The thorax is half as wide as 

 the m-ddle part of the elytra. In recently developed specimens, the sides of the 

 thorax, and the under surface of the body are pale. 



A number of pupae found with the insects have the thorax, the dorsal abdo- 

 minal line, and the margin fringed with long spines. The specimens have dried 

 so much that no examination of the mouth can be made. 



2. E. , niger ovatus, postice acutus, tenuiter pubescens, elytris obso- 

 lete striatis, transversim dense strigosis, apice feriugineis, antennis pedibusque 

 piceo-rufis, illis articulo 3io sequente vix breviore. Long. "11. 



One specimen, Vermont ; collected by the late Prof. C. B. Adams. I can find 

 no character to separate this species from E. haemorrhoidalis of Europe ; 

 with the figures and description given by various authors it accords perfectly, 

 but I have not yet had an opportunity of comparing it with European specimens, 

 and therefore do not propose a name. 



3. E. m r i o, longiusculus, ovatus, niger, postice acutus, tenuiter dense 

 pubescens, elytris obsoletissime striatis, transversim strigosis, tarsis anticip, 

 antennarumque basi testaceo-rufis, his articulo 3io sequente vix breviore. 

 Long '11. 



Alabama, collected by Hentz, and given me by Prof. S. S. Haldeman. This 

 species is narrower than the preceding, and more acutely attenuated pos- 

 teriorly, otherwise the differences appear to be entirely in color. 



Syiiopsis of the EndomychidcB of the Tlnited States. 

 By John L. Le Conte, M.D. 



Although I have not been able to refer to the scheme of classification of this 

 family, proposed by Germar in the Encyclopedia of Ersch. and Gruber, it has 

 seemed to me that our native species present sufficient interest for a synopsis. 

 The necessity of referring to a general treatise, is the less felt, as our species 

 seem to enter a small number of genera, most of which are already fully de- 

 scribed in local European Fauna, such as Mulsant's Coleopteres de France, and 

 Redtenbacher's Kafer Oesterreichs. 



The following arrangement of the genera differs, however, in many respects, 

 from that given by Mulsant,as well as from the portion of Germar's table cited 

 by him. By considering s[)ecific characters as of generic value, the genera in 

 this group seem to have been unnaturally increased, and closely allied species 

 widely separated. For our genera, the following seems to be more suitable: 



A. Prosternum inter coxas distinctum. 

 Antennce gradatim incrassatae, articulo ultimo trun- 



cato ........ Epipocus Germ. 



Antenna? articulis ultimus tribus obliquis, maioribus ; 



palpi maxillares dilatati ..... Endomychus Weher. 



palpi maxillares tenues ..... Mycetina Mids. 



Antennae articulis ultimis tribus perfoliatis . . Phymaphora ISeivman, 



B. Prosternum inter coxas non prodiictum. 



Femora clavata ; antennae art lOmo obliquo . . Lycoperdina Zf^fr. 

 Femora non clavata ; antennae art. ultimis perfoliatis Rhanis. 



Epipocus Germ. 



Antennae articulo 3io longiore, articulis tribus ultimis gradatim maioribus, 

 ultimo subtruncato, et saepe inferno acuminato; prosternum inter coxas anticas 

 angustum, distinctum ; mesosternum postice truncatum ; palpi maxillares arti- 

 culo ultimo cylindrico. 



