1853.] 357 
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 joint 
of the antennz is only half as long as the fourth. The thorax is half as wide as 
the middle 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 pupz 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. » higer ovatus, postice acutus, tenuiter pubescens, elytris obso- 
lete striatis, transversim dense strigosis, apice ferrugineis, 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 KE. ha morrhoidalis of Europe; 
with the figures and description given by various authors it accards perfectly, 
but I have not yet had an opportunity of comparing it with European specimens, 
and therefore do not propose a name. 
3. E. morio, longiusculus, ovatus, niger, postice acutus, tenuiter dense 
pubescens, elytris obsoletissime striatis, transversim strigosis, tarsis anticis, 
antennarumque basi testaceo-rufis, his articulo 3i0 sequente vix breviore. 
Long. :11. 
Alabama, collected by Hentz, and given me by Prof. 8.8. Haldeman. This 
species is narrower than the preceding, and more acutely attenuated pos- 
teriorly, otherwise the differences appear to be entirely in color. 
Synopsis of the Endomychide of the United States. 
By Joun 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 Coléoptéres 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 specific 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. 
Antenne gradatim incrassate, articulo ultimo trun- 
cato : : 6 - Epipocus Germ. 
Antenne articulis Tlifeans tribus obliquis, maionibuel ; 
palpi maxillares dilatati . 6 : : - Endomychus Weber. 
palpi maxillares tenues. . - Mycetina Muls. 
Antenne articulis ultimis tribus perfoliatis ° - Phymaphora Newman. 
B. Prosternum inter coxas non productum. 
Femora clavata; antenne art 10mo obliquo . . Lycoperdina Latr. 
Femora non clavata; antenne art. ultimis perfoliatis Rhanis. 
Erirocus Germ. 
Antenne articulo 3io longiore, articulis tribus ultimis gradatim maioribus, 
ultimo subtruncato, et sepe inferno acuminato; prosternum inter coxas anticas 
angustum, distinctum ; mesosternum postice truncatum ; ; palpi maxillares arti- 
culo ultimo cylindrico. 
