246 J. L. LECONTE, M. D. 



8. T. caloderinus, n. sp. — Not depressed, blaek, shining, fineh' sparsely 

 pubescent, sparsely setose at the sides of the prothorax, elytra and abdomen. 

 Head suddenly constricted a short distance behind the eyes, which are moder- 

 ately convex, surface sparsely finely punctured, frontal impressions short, an- 

 tenna! tubercles moderate. Antennse rather slender, a little longer than head 

 and prothorax, outer joints broader, not transverse, last joint more pointed than 

 usual. Maxillary palpi with the third joint elongate-ovate, rounded at tip, 

 fourth joint obsolete. Prothorax much wider in front, and strongly rounded, 

 narrowed and subsinuate on the sides towards the base, which is rounded; front 

 angles rounded; disc sparsely very finely punctulate, with a very deep arcuated 

 posterior impression, and two faint small impressions in front of the middle. 

 Elytra wider than the prothorax, and somewhat longer, rather convex, strongly 

 punctured, scutellar region impressed; epipleural line fine, not far from the 

 extreme margin. Dorsal segments nearly smooth, ventrals more pubescent, 

 obsoletely punctulate. Length 3 mm; .11 inch. 



%. — Seventh ventral squarely and deeply emarginate, with the base of the 

 emarginate obtusely toothed; eighth segment channeled. 

 Texas, Mr. G. W. Belf'rage, six specimens. 



Group IV. 



9. T. plilceoporinus, n. sp. — Ferruginous, shining, feebly pubescent, 

 head, prothorax and elytra strongly punctured, abdomen punctulate. Head 

 narrowed some distance behind the eyes, which are small, and not prominent. 

 Antennae stout, not longer than the head and prothorax, outer joints transverse. 

 Prothorax not wider than long, sides rounded in front, obliquely narrowed 

 behind, front angles not rounded, but also not prominent; disc coarsely not 

 densely punctured, with the dorsal line smooth slightly elevated, limited by 

 two broad longitudinal impressions extending from the base beyond the middle. 

 Elytra not wider than the prothorax and a little longer, strongly punctured, 

 impressed along the suture. Dorsal and ventral segments finely and rather 

 densely punctulate, epipleural line distinct, not remote from the extreme 

 margin. Length 2.2 mm; .09 inch. 



Illinois, one specimen. 



Group Y. 

 Of this group I have nearly forty species, some of which seem to 

 be very nearly allied to European forms, and in some instances have 

 been recognized as identicul. The only names I am able to cite for 

 the described species are : 



10. T. qnaclripunctatns, Stenus A-panct. Say, Tr. Am. Phil. Soc. iv, 459 ; 

 ed. Lee. ii, 575; T. morio, Er. Staph. 805. 



Western and Southern States. Easily known by its larger size, sub- 

 hexagonal prothorax, strongly punctured elytra and black legs. 



11. T. subtilis, Er. Kafer Mark Brand. 606; Staph. 812, etc. 



A European species, which has occurred in the Southern and 

 Western States. 



