BY THOMAS G. SLOAXE. 357 



C Marginal channel of elytra simple, 

 ateral interstice convex. 

 Prothorax without a dentiform pro- 



ection on siiles before base. 

 . Elytra sexstriate ou eacli side of 



suture. 

 /. Elytra quadrimaculate, fifth stria 



reaching border of base T. buprestiokks, SI. 



,/7". Elytra l:iimaculate, fifth stria not 



reaching base T. froggatti, SI. 



ee. Elytra quinquestriate on each side 

 of suture 



g. Elytra quadrimaculate. T. striolatus, Ma-d. 



gg. Elytra bimaculate T. hipusfulaUis, MacL 



* eee. Elytra bistriate on each side of 



suture T. curticoUis, SI . 



eeee. Elytra unistriate on each side of 



suture T. iaapidevs, SI. 



del. Prothorax with a dentiform projection 

 on sides a little before base. 

 h. Elytra bistriate on each side of 



suture T. spenceri, SI. 



hh. Elytra "unistriate on each side 



of suture T. his'rlatus, Macl. 



CC. Marginal channel of elytra punctate, 

 lateral interstice depressed. 

 i. Elytra with eight punctate stri* ou 

 each (seventh as well marked as 



others^ T. yarrensift, Blkb. 



ii. Elytra with seventh stria obsolete. 

 j. Lateral basal foveas of prothorax 

 concave, bordered by the widely 

 upturned lateral border. 

 k. Elytra sexstriate on each side of 

 suture, lateral margin of pro- 

 thorax with one setigercis 

 puncture anteriorly T. monochrous. Schaum. 



* T. ovenseniiis, Blkb., (a specimen of which I received from Mr. Blackburn while this 

 paper was in the press) belonss to section " eee." For srme differences between it ami T 

 curticolUs, see description of the latter [pnst, p. 364). 



