322 MEMOIRS ON THE COLEOPTERA 



Maxillary palpi slender, the fourth joint longer but not wider than the 

 third and not truncate; antennae filiform; body moderate to rather 

 large in size, opaculate or feebly shining; basal thoracic constriction 

 feeble, the anterior angles not deflexed, the foveae single; elytral 

 striae with true and distinct punctures. Southern Atlantic regions. 

 [Type assumed C. roticollis nov.] Cyclotrachelus Chd. 



Maxillary palpi stout, the fourth joint shorter than the third and trun- 

 cate; antennae thick basally; body very large, the head large; ante- 

 rior thoracic angles deflexed, the base deeply constricted, the foveae 

 irregularly bistriate; elytral striae almost obsolete and without true 

 punctures, the scutellar stria wanting; tooth of mentum rather small, 

 deeply emarginate at apex, with acute lobes. Texas. [Type M. 

 gigas nov.] Megasteropus nov. 



Maxillary palpi rather slender, the last joint slightly to much shorter 

 than the third, and never notably wider, fusiform, never more than 

 narrowly truncate; body moderately large, often very stout, with only 

 moderately large head and shorter mandibles, which, as usual in 

 this section, are coarsely strigose; anterior thoracic angles not de- 

 flexed, the constricted base wider to much narrower than the apex, 

 the foveae always bistriate; elytral striae with true and distinct punc- 

 tures; mentum tooth as in the preceding but relatively still smaller. 

 Atlantic to Sonoran regions. [Type E. sexualis nov.] 



Eumolops nov. 



13 Body larger, usually opaque or with the anterior parts slightly more 

 shining in both sexes, the palpi nearly as in the preceding genus; 

 thoracic foveae large, bistriate; elytral striae moderate, distinct, al- 

 ways distinctly punctured; abdomen not modified at tip in the male. 

 Atlantic to Sonoran regions. [Type Per. sigillata Say] 



Evarthrus Lee. 



Body smaller and more slender, the integuments shining, the elytral 

 striae deep, impunctate as a rule; maxillary palpi slender, the fourth 

 joint as long as the third or longer; thoracic foveae single, linear; 

 last ventral segment strongly modified in the male by impression or 

 tuberculation. Atlantic regions. [Type Evarthrus mancus Lee.] 



Monoferonia nov. 



14 Body small and ventricose, the head well developed; basal thoracic 

 angles obtuse, sometimes with a minute acute prominence at the 

 setigerous puncture, the foveae single, short, deep and oval. Atlantic 

 regions. [Type Pt. Icei'ipennis Lee.] Ferestria Leng 



15 Prothorax finely margined at the sides; body small and more slender; 

 pronotal foveae single, long and linear; elytral striation normal. At- 

 lantic regions. [Type Pt. palmi Schf.] Feronina nov. 



Prothorax coarsely margined at the sides; body larger, more convex and 

 less slender, always strongly shining in both sexes, the elytral striae 

 complete and very deep, the dorsal punctures somewhat variable 

 though normally two in number; thoracic angles obtuse, the foveae 

 large, generally duplex; the angles are however sharply marked and 

 the foveae single in lachrymosa; abdomen not modified apically in 

 the male. Atlantic regions. [Type Fer. stygica Say] 



Euferonia nov. 



