THE J.F. \F BEKTi.ES. ]101 



above, but in subliJis the male is convex and the female flattened. 

 But two, distiiictn and torosa, have the sutural margins sinuate. 



KEi' TO SrECIES OF GROUP B. 



«. Kudy liriiMd. ilistinctly flattened above : middle cclx^h seijarated by about 

 their own widtli. 

 h. Third jcint of antennje about one-lialf lon^'er than r^euond. 

 ' . Thorax finely and indistinctly punctate. 

 (/. (iilor brownish or tusc(,us yellow; form more slender; hind tibia> 

 iif male curved, serrate; elytral punctures linex". 



'I(y2i. CIN'CTICORMS. 



(Id. Color purplish-black ; form broader, more robust ; hind tibi;v 

 straight ; elytral punctures coarser, subquadrate. 



I.'ll2.">. PBOXIMA, 



(i: Thorax coarsely punctate over its entire surfai e. m.\gxifica. 



l&. Third joint of antenmie more than twice the length of sec.nd. 



I'. Elytra truncate at tips; first ventral segment of male .simple, cuu- 



ve.x. 



/. Front tarsi of male dilated; color greenish-bronzed; larger, 9- 



11 mm. l'ii2(J. p.\i,M,\TA. 



//. Front tarsi cjf male simple; color brownish-yellow; smaller, i!- 



^^ mm. 2(IJT. eufkscens. 



cr. Elytra snbtruncate at tips, form more convex; first ventral of male 



concave at middle; sidt'S of thorax strongly tul.erculate. 



2U2S. PISCATKIX. 



<ia. Body narrower, more convex above; middle C(ix;e separated by less than 



their own width. 



(J. Thorax with disk even, punctate, not or scarcely tuberculate on sides. 



h. Punctures of thorax very fine, confused and confluent; third joint 



of antennre one-third longer than second. 20211. cubticollis. 



/(/(. I'unctures of thorax larger and distinct. 



/. AnteuuiB and legs pale reddish-brown, the former very stout, the 

 second and third joints subequal ; thorax with coarse, trans- 

 verse wrinkles in addition to punctures. 2i>oii. ifEG-A.eORKis. 

 // Antennfe and legs dark reddish-brown to pice. us, the former 

 much more slender, third joint distinctly longer than second. 

 j. Punctures of thorax co.irse. uniform in size. 

 A-. Third joint of antennte one-half longer than second; thorax 

 straight on sides. 2ij31. subtilis. 



/r/.-. Third joint of autennse twice the length of second; thorax 

 constricted at middle. 2032. elgosa. 



ij. Punctures of thorax not uniform, finer mixed with the coarser; 

 third joint of antennfe one-half longer than second. 



POROSICOLLIS. 



iiU- Thorax with disk uneven, the sides tuberculate ; elytra with two 

 transverse depressions. 

 /. Sutural margin of elytra straight. 203.". ^qualis. 



;/. >Suthral margin of elytra sinuate. 



