316 NEW YORK STATE MUSEUM 



aa Head occasionally, thorax never, pubescent 

 6 Elytra truncate or subtruncate 

 c Form decidedly flattened, mesosternum about as broad as each coxa 

 d Thorax narrowed in front; posterior femora plurideutate in the 



male, simple in the female f 1 o r i d a e 



dd Thorax quadrate, or wider in front; posterior femora dentate in 

 both sexes, the male often bidentate or tridentate 

 e Antennae with the second and third segments neai'ly equal 

 ! cincticornis 



ee Antennae Avith the third segment much longer than the second 

 f Elytra truncate; first ventral segment of the male not de- 

 pressed at middle 



ff Anterior tarsi of the male dilated palmata 



fj(j Anterior tarsi of the male simple hypoleuca 



// Elytra subtruncate; form more convex; first ventral segment 



of the male depressed at middle p i s c a t r i x 



cc Form more convex; mesosternum narrower than the coxa 



d Eyes of normal size; sutural margin of the elytra straight, except 

 in d i s t i n c t a 

 e Thorax punctate, not, or scarcely, tuberculate 

 f Thoracic punctures coarse, uniform; median furrow not dis- 

 tinct and punctured at bottom 

 g Second and third segments of the antennae subequal 



s u b t i 1 i s 

 gg Second segment of the antennae about one half the length 



of the third r u g o s a i 



ff Thoracic punctures uneven, thorax rugose with punctures 

 between the rugosities; median furrow distinct, entire, and 



not punctured at bottom porosicollis 



ee Thorax uneven on the disk, tuberculate on the sides 

 f Sutural margin of the elytra straight 



g Elytra with transverse indentations aequalis 



gg Elytra not with transverse indentations; posterior femora 

 of the male dentate, simple in the female 



t u b e r c u 1 a t a 



ff Sutural margin of the elytra sinuate distincta 



dd Eyes small; thorax tuberculate; sutural margin of the elytra 



sinuate h a r r i s i i 



66 Elytra rounded at tip; the sutural margin sinuate posteriorly; form 

 convex; mesosternum narrow 

 c Thorax depressed without basal and medial grooves 



d Posterior femora dentate in botli sexes p u s i 1 1 a 



dd Posterior femora dentate in the male only f o m o r a 1 i s 



cc Thorax convex, punctured, and with an evident basal and a more 

 or less evident medial groove 



IThis form is considered a variety of subtil is by Mr Leng, but, if 

 the character given above is worthy of group value in the case of cinc- 

 ticornis, palmata, hypoleuca, and p i s c a t r i x , I can 

 >ee no reason why ru gosn should not l)e entitled to specific rank, and 

 have so considered it here. 



