NORTH OK MEXICO. 393 



any depression in the lasl abdomin -1 segment. 1'ln- terminal joints of the antennae are 

 less coinproMi] and no1 shorter. The antennae, as in most of the species of the genus, 

 are shorter in the female. 



Length .46— .53 inch. 



Southern Stat< - 



II. venustus, Say, Long's Expcd. 2, 



Smaller than either of the preceding. The sides ol the thorax arc nearly straight, the 

 propleurae coarsely but not confluently punctured, and the elytra deeply striate, with • 

 vex interstices. Antennae slender and as in undulatus. 

 Length .36-.3S inch. 



Nol abundant in the Middle and Southern Sta- 

 ll, impolitus, Lee, New Species, 132. 



Thorax nearly square, sides nearlj . apex very feeblj emarginate. Elytra with 



striae of coars punctures. Color black, slightly bronzed, sub-opaque. Antennae slender. 

 Propleurae rugosely punctured, punctures behind continent in grooves, Lasl segment ol 

 abdomen concave and hairy at apex. 



I >i ngth .•">() inch. 



Texas. One male in my nun cabinet, and a female in that of Mr. Qlke. 



II. ..p.., -n -. I. ■•■.. Pro \ I 234. 



Thorax truncate in front, angles rounded; base almost trunca jles rectangular; 



side- rounded in front, slightly sinuate and converging behind; surface opaque black, 

 rugosely punctured. Three terminal joints <>l' antenna' shorter, compn ssed, broader than 

 long. Propleurae coarselj and rugosely punctured. Two forms of this species occur, on< 



apterous, tl ther winged. In the apterous form the thorax is more convex, th • elytra 



more robust, convex and shorter. The winged species has the elytra depressed, more 

 elongate and Less rounded on the sides; the thorax is also less convex, rather broader and 

 with less rounded sides. 1 am unwilling at present to assign a distinct name to the latter 

 form, desiring a further accumulation of specimens. 



length .52-.70 inch. 



From Sin Francisco, ( !al. 



II. p u Dcti pe ii ii i - 133. 



Similar in form to the preceding, l>nt mere depressed and smaller. Thorax slightly 

 broader than long; disc densely but not rugosely punctured, sides rounded in front. 

 slightly sinuate behind, base truncate, angles slightlj acute, more prominent in any other 

 of our species. The elytra are depressed, slightlj broader behind, moderately striate, 



ami. HI. I'M r i — vor„ XIV.- 



