NORTH OF MEXICO. 



257 



Front uni or trilobed. 



Body apterous ; metasternum short. gnatiiosiini. 



Body winged ; metasternum long. 



Anterior tibiae slender, with two spurs. epitragini. 



Anterior tibias with the outer apical angle prolonged 



and with a single spur. cnemodini. 



Front broadly rounded. thinobatini. 



Mentum large, concealing either ligula or maxillse, never both; 



Tibial spurs distinct. BATULIINX 



Tibial spurs very minute. 



Anterior coxse widely separated. 



Eyes transverse, finely granulated. zopherini. 



Eyes rounded, coarsely granulated. useoiiinx 



Anterior coxae narrowly separated; 



antenna; 11-jointcd. Stenosiini. 



Anterior cox* continguous; 



antenna; 10-jointod. dacoderini. 



TRIBE I — EPIPHYSINI. 



Body short, convex, apterous; epistoraa trilobed, labrum prominent; mentum very 

 large, entirely filling the gular cavity; ligula and maxillae concealed; thorax very sbort, 

 anterior angles prominent, acute; elytra globose, sides embracing widely the flanks, cpi- 

 pleuree narrowing; coxie widely separated, the posterior transverse; prosternum closely 

 fitting to the mesosternum. Tarsi slender, sparsely ciliate with long hairs. 



This tribe contains in our fauna but one genus. 



EDROTES, Lee. 

 Edrotes, Leo., Ann. Lye. V, 141. 

 E. rotundus, Say, (Pimelia) Journ. Acad., 8,251; Jjoc. (Edrotes) Ann. Lye. V, 141. Lao. Genera, PI. 48 ii"-. 3. 



Sub-opaque, coarsely but sparsely punctured and sparsely clothed with reddish hairs. 

 Length .25-80 inch. 



Occurs rather abundantly on the Plains of Kansas and Nebraska. 



E. ventricosus, Lee, Ann. Lyo. V, 141; Lac. Genera, PI. 48, dg. 8; Thomson, Arcana Natune, Vol. I, PL 

 [, fig. 8. 



Shining, more finely and sparsely punctured and sparsely clothed with greyish hair. 

 Length .41 inch. 



Occurs in the Desert region of California east of the Sierra Nevada, and in similar re- 

 gions of Arizona and Nevada. 



AMERI. PHILOSO. SOC VOL. XIV. — 05 



