Neiv and liltle-lmown Lagriidae. 173 



18. Species small, slender, with opaque black 



head and prothorax, blue elytra, and 



yellow tarsi No. 89. 



19. Species slender, with large head and narrow 



prothorax, piceous or in part testaceous, 

 resembling the Carabid-genera Dromms 

 and Casnonia; elytra with setigerous im- 

 pressions, preceded by a more or less 

 distinct tubercle; anterior tibiae com- 

 pressed at base in S. casnonioides . . Nos. 90-93. 



20. Species testaceous or reddish, the elytra 



(except in vars.) with metallic or black 

 markings or fasciae, these latter sometimes 

 greatly extended or confluent, the alternate 

 interstices, at most, with setigerous im- 

 pressions, the prothorax not incised on 

 the disc in front, sometimes bivittate. 



a. Elytra with numerous small tubercles . No. 94. 



6. Elytra not tuberculate Nos. 95-106. 



21. Species testaceous, with nigro-tessellate elytra No. 107. 



22. Species testaceous, with a deep incision on 



the disc of the prothorax in front, the 

 elytra (except in vars.) with coalescent 

 black markings or wholly black . . . Nos. 108-110. 



23. Species rufo-testaceous, shining, with nigro- 



bivittate prothorax and nigro-fasciate, 

 closely setose, elytra, each of the inter- 

 stices of latter seriato-punctate . . . No. 111. 



24. Species testaceous, hairy, with coarsely 



punctate prothorax and nigro -maculate 

 elytra, each of the interstices of latter 

 seriato-punctate Nos. 112, 113. 



25. Species slender, testaceous, with head and 



prothorax opaque and elytral suture, at 

 least, infuscate. 



a. Elytra tuberculate ; head small . . . No. 114. 



b. Elytra not tuberculate ; head large . . No. 115. 



26. Species with prothorax distinctly margined 



laterally.' 



a. Body obscure testaceous, the elytra fusco- 

 fasciate [Nicaragua] No. 116. 



b. Body nigro-piceous or black, the prothorax 



red, the elytra blue No. 117. 



' Various Central- and N. -American forms belong to this section. 



