315 



D. Breast armed. 

 s. Iiitermediate cariuîe gradualy raerged iu head. 

 /. Suture non-tuberculate. 

 M. Elytral punctures ail clearly defiued. . . Frenchi u. sp. 

 uu. Elytral punctures frequently confluent . rudis n. sp. 

 tt. Suture tuberculate. 

 V. Sublateral sulcicloseil posteriorly. . . . tribtilus Fâb. 

 vv. Sublateral sulci opeu posteriorly. 



w. Third and fifth interstices carinated . . ampUpennis u. sp. 

 ww. No interstices carinated. 



X. Suturai tubercles feeble gravis Blackb. 



XX. Suturai tubercles large and acute . . elongatus n. sp. 

 ss. Intermediate carinse more or less suddenly 

 terminated. 

 y. Suture tuberculate. 



z. Scape stout biordinattts Blackb. 



zz. Scape rather thiu. 

 a. No interstices carinated ...... parvicornis n. sp. 



aa. Third interstice at least carinated . j , .-^ ,., ,', 



I contranus Blackb. 



yy. Suture uou-tuberculate. 



b. Prothorax somewhat flatteued on dise . . éc/jî^»aW.-S.MacI. 



bb. Prothorax not so flatteued. 



c. Pectoral armature feeble cacozelus n. sp. 



ce. Pectoral armature strong. 



d. Terminatiou of intermediate carinse 



very abrupt colossus Paso. 



dd. Tei'minatiouof thèse much less abrupt hercules n. sp. 



DD. Breast unarmed. 



E. Head tuberculate. 



e. Suture non-tuberculate frontalis Blackb. 



ce. Suture tuberculate. 



/. Prothorax with two strong tubercles in 



front Baileyi Blackb. 



ff. Pi'othorax at most with feeble tubercles 



front. 



g. Sublateral sulci closed posteriorly . . . concaviceps n. sp. 



gg. Sublateral sulci opeu posteriorly. 



h. Elytra with numerous granules . . . ebeninus Pasc. 



•. hh. Elytra at most with granules on suture. 



i. Cephalic tubercles widely separated . polyacanthus Pasc. 



ii. Cephalic tubercles snbapproximate . ntusimon Pasc. 



EE. Head non-tuberculate. 



F. Elytra fasciculate fasciculatiis n. sp. 



FF. Elytra nou-fasciculate. 



G. Suture tuberculate. 



j. Suture not thickened posteriorly . . . Homt Blackb. 



jj. Suture thickened posteriorly. 



k. Elytra conjoiutly arcuate at base . . robustus Oliv. 



kk. Elytra sepai'ately rounded at base . cinerascens n. sp. 



GG. Suture non-tuberculate. 



