834 Trans. Acad. Set. of St. Louts. 



First joint distinctly shorter than the second; impressions as in the preced- 

 ing group 9 



First joint longer than the second ; abdomenal impressions very broadly con- 

 cave 10 



i — Mesosternal process more or less broad, frequently obtusely arcuato- 



truncate at apex 5 



Mesosternal process very acute at tip 6 



5 — Infra-lateral carinae extending less than half veay to the buccal opening; 



antennae rather thin, the last joint of moderate length, about as long 

 as the preceding two combined. Europe. Type L. vicina Steph. 



Liogrlnta 



Infra-lateral carinae extending almost to the buccal opening, fine; antennae 



thick, the last joint unusually elongate, as long as the preceding three 



combined or nearly so. Nearctic Atlantic regions. Type M. alntacea 



Csy. (n. sp.) Macroterma 



6 — lofra-lateral carinae long, extending more than half way to the buccal 



opening. Nearctic Faciflc coast fauna 7 



Infra-lateral carinae extremely short, basal; prothorax small, narrowed 



toward base. Nearctic Atlantic fauna 8 



7 — Abdomen with four segments impressed at base; elytra granose; an- 

 tennae long, loose, rather slender, the apical joint normal; prothorax 

 narrower than the elytra. Type Homalota granulata Mann....£lytriisa 

 Abdomen with but three segments impressed at base; elytra not granose; 

 antennae long but thiciier, more incrassate and more compact, the last 

 joint pointed at tip and about as long as the two preceding combined; 

 prothorax large. Type Oxypoda ijisignis Csy Athetota 



8 — Abdomen with three segments deeply and subequally impressed at base; 



integuments densely micro-reticulate and dull; pubescence rather short, 

 subdecumbent; antennae less than half as long as the body. Type T. 



brunneipes Csy. (n, sp.) Terasota 



Abdomen with four segments deeply Impressed at base; integuments wholly 

 devoid of micro-reticulation and highly polished; pubescence long, 

 suberect and bristling; antennae more than half as long as the body, 

 very slender. Type E. lucida Csy. (n. sp.) Enromota 



9 — Infra-lateral carinae extending almost to the buccal openin.q;; hind tarsi 



shorter; antennae nearly as in Liogluta. Europe. Type Homalota 



castanoptera Mann Homalota 



Infra-lateral carinae very short, basal; hind tarsi noticeably less abbreviated; 

 antennae longer, thicker and more incx'assate; eyes less developed. 

 Europe. Type Liogluta sexnotata Thorns., as identified by Eeitter in a 

 specimen collected in the Caucasus .m^.— » 



10 — Infra-lateral carinae very short, obsolescent and basal ; prothorax small, 



with the sides converging toward base; integuments densely micro-re- 

 tlculate; pubescence short, subdecumbent; antennae nearly as in 

 Liogluta; first three abdominal segments broadly and strongly im- 

 pressed, the fourth narrowly and less strongly though distinctly. Ne- 

 arctic Atlantic regions. Type T. ventralis Csy. (n. sp.) ...Taphrodota 



11 — Eyes small, the antennae long, thick, infra-lateral carinae very short, 



wholly basal; body thick, the prothorax large; first three tergites nar- 



