AMERICAN PHILOSOPniCAL SOCIETY. 475 



having been applied to a very different insect, the above is sub. 

 stituted for it. 



[A Platijnus of the division Aijimuin. — IjEc] 



27. F. coNVEXicoLLi.s. — (Jreen varied with cupreous, all be- 

 neath black ; thorax submarginatcd, punctured behind. 



Length more than seven-twentieths of an inch. 



Body beneath black ; head green, with slight cupreous rcflcc 

 tions J labrum purple-black; mandibles black; thorax green, 

 elevated portion cupreous, margin depressed more perceptibly 

 towards the hind angles, breadth greatest in the middle, hardly 

 contracted behind, base as broad as the elytra and punctured; 

 elytra green, slightly varied with cupreous, particularly at the 

 sutural base, stria; with indistinct, distant punctures, interstitial 

 lines sduiewhat convex, third one with three distant punctures 

 behind the middle; postpectus punctured each side; feet 

 black. [51] 



I have seen but a single specimen, which was deficient in an- 

 tenna^, palpi, and also in tarsi, with the exception of two joints 

 of the second pair ; these were not dilated. It was brought from 

 Missouri by Mr. Nuttall. 



[Belongs to PceciJus. — Lec] 



28. F. uonesta. — Black ; beneath and feet piceous ; above im- 

 punctured ; thoracic lines profoundly indented ; lateral edge 

 excurved behind. 



Length more than three-tenths of an inch. 



Body black with a piceous shade, beneath piceous ; antenna} 

 and palpi rufous ; labrum piceous; thorax impunctured, broadest 

 before the middle, gradually contracted behind, dorsal and basal 

 lines profoundly indented, lateral edge excurved near the base, 

 basal angles rectangular; elytra piccous-black, deeply striated, 

 striae impunctured, interstitial lines convex, third one with a 

 puncture near the middle ; postpectus each side and peduncle 

 punctured ; feet piceous; venter punctured each side at ba.sc. 



[Afterwards described by Dejean as Fcronia fascidit^, and by 

 Laporte as Stoniis amrrirana. Overlooking the dorsal puncture, 

 I placed this species, Journ. Acad. Nat. 8c. 2d, ser. 2, 237, in 

 the division of Pkrostichtts, having no dorsal puncture. — Lec.] 

 1823.] 



