American Caraboidea 135 



the feeble cupreous-green lustre of the latter; sculpture and orna- 

 mentation similar; elytra angulate at apex, the angle rounded at the 

 suture and not broadly, subevenly rounded throughout as in severa. 

 Length (cf 9 ) 12. 0-13. 4 mm.; width 4.33-4.65 mm. Alabama (Coden), 

 — Loding. 



The labrum is plceo-flavate as in severa. The dimensions of the 

 severa female are 15.0 by 5.0 mm. 



CARABID^ 



Omophron Latr. 



The probabilities are that this genus should be separated from the 

 Carabidae and placed bet^veen that family and the Dytiscidae, but 

 this assumption should not be based entirely upon the peculiar 

 rotund form of the body, for the Lebiid genus Cyclosomiis Latr., 

 resembles Omophron very much in this respect. Possibly a study 

 of the larv^a would be decisive in coming to a conclusion in regard 

 to the relationships of Omophron. The following is a new form 

 recently received, for which a name would seem to be desirable: 



Omophron lengi n. sp.— Outline rather broadly elliptical, convex, 

 shining, pale flavo-testaceous, the dark areas of the upper surface with 

 green metallic lustre; head slightly more than half the basal thoracic 

 width, the eyes large and somewhat prominent; surface with sparsely 

 punctate green-black base, the more anterior flavate part perfectly 

 smooth and broadly, angularly emarginating the dark basal part as in 

 americanum, texanum and allied forms; antennae pale, slender, rather 

 longer than the thoracic width; mandibles blackish distally; prothorax 

 fully two and one-half times as wide as the median length, the sides 

 moderately converging from base to apex and feebly arcuate, the acute 

 apical angles abruptly very prominent; punctures coarse, widely spaced 

 and rather uneven, the surface fllavate, suffusedly and broadly darker 

 medially from base to apex, and with a transverse metallic fascia abbrevi- 

 ated at each side; elytra of the usual outline, slightly longer than wide, 

 between three and four times as long as the prothorax and. near basal 

 fourth, evidently wider, flavate, the base, dilated externally but not 

 attaining the sides, metallic-black; suture with short angular scutellar 

 region, a transverse oval spot at one-third, another transverse area at 

 four-sevenths, with a hastate prolongation toward apex, green-black, a 

 large rounded sublateral spot at basal third and a smaller one near apical 

 fourth, connected with the post-median transverse sutural spot, also of 

 the same color; striae coarse, deeply impressed, fifteen in number and 

 coarsely and deeply punctate. Length (cf) 6.0 mm.; width 4.0 mm. 

 South Carolina. 



The type was sent to me some years ago by Mr. Chas. \V. Leng. 



