SOME NORTH AMERICAN INSECTS. 157. 



punctures than the thorax; suture indented: feet pale testaceous: ter- 

 gum^ segments with dilated punctures at base. — Length less than three- 

 twentieths of an inch. 



The thoracic canal is less dilated, but at least as profound as that of 

 the canaliculata, Grav. ; the thorax is more contracted behind, and the 

 head more prominent, and distinctly separate from the thorax by a 

 short neck. 



The genus Aleochara, as is obvious to entomologists, needs reforma- 

 tion. The present species, and some others of Gravenhorst's first di- 

 visions, may be separated from it under the following name and cha- 

 racters. 



Genus Aleodorus. Head prominent, with a distinct neck, not in- 

 serted into the thorax; antennas inserted into the anterior internal orbit 

 of the eye ; three basal joints longest ; maxillary palpi long, terminal 

 joint acicular ; thorax longitudinal, rounded on the sides, or v>'ithout 

 lateral edge ; feet simple.* 



BUPRESTIS, i^. 



1. B. mrginica, Turton's Linn. p. 411 ; Drury's Ins., vol. I., p. 66, 

 pi. 30, fig. 3. 



This species very closely resembles B. mariana, L., and notwith- 

 standing the magnitude of Drury's figure, it is somewhat smaller than 

 the latter species, the posterior part of the thorax is a little narrower 

 and the curvature of its lateral edge is somewhat different. It inhabits 

 the eastern and middle states. 



2. B. liheria, Germ. This differs more in colour from the virgini- 

 ensis, than the latter species does from the mariana; but it corresponds 

 with virginiensis in the form of the thorax. I am still inclined to 

 consider it a variety of that species, which Germar does not refer to in 

 his description of liberta. 



3. B. lurida, F. (and Melsh. Catal.) 



This is the corrosa^ Deg. MSS. Herbst. Olivier did not observe 

 the anal points, which are sometimes obscured by the hair. 



* I am indebted to Professor Wiedeman for the two very useful works on " Coleoptera 

 Microptera" by Gravenhorst. They contain detailed descriptions of many North American 

 species of the Linnsean genus Staphylinus, which now constitute a large family. 



