216 Mr. Arthur M. Lea's Revision of the 



(jg. Head otherwise sculp- 

 tured niger, n. sp. 



ff. Head with excavations 

 not transversely con- 

 ll nected. 



h. Excavations closed be- 

 hind ater, n. sp. 



hh. Excavations open be- 

 hind basirufus, n. sp. 



DD. Prothorax entirely -pale. 



E. Head sometimes concave but 

 ncA'er largely excavated. 

 i. With a large frontal tubercle. 

 j. Elytra abdomen and legs 



dark helmsi, n. sp. 



jj. Elytra abdomen and legs 



partly pale tnherculifrons, n. sp. 



ii. Without a large frontal 

 tubercle. 

 k. Head concave between eyes hllobus, n. sp . 

 kk. Head convex between eyes. 



I. Shoulders pale .... simpUciceps, n. sp. 



II. Shoulders dark . . . pnlchripes, n. sp. 

 EE. Head largely excavated. 



F. Excavation trisinaute pos- 

 teriorly. 

 m. Head entirely dark . . . nigriceps, n. sp. 

 mm. Head pale in front. 

 n. Greater portion of legs 

 pale. 

 0. Head with a basal spot 



only mactiUceps, n. sp. 



00. Head with entire base 



dark fnscitarsis, n. sp. 



nn. Greater portion of legs 

 dark. 

 p. Median tubercle de- 

 cidedly raised above 



others t\iberculatns, n. sp 



pp. Median tubercle not 

 so raised. 

 q. Median sinus nar- 

 rower than the 

 lateral ones . . varius, Lea. 



