NATURAL SCIENCES OF PHILADELPHIA. 57 



C. Anterior coxal cavities open, thorax not margined at base. 

 D. Antennae separated at base. 



r Bisonyeha. 



E. Posterior tarsi normal. Grapiodtra. 



Orchestris. 



i. Afhthona. 



Eb. Posterior tarsi with the first joint elongate. 



Longitarsus. 



Dh. Antennae almost contiguous. Dibolia. 



a. Anterior coxal cavities closed, elytra generally striate 



2)unctate. 



D. Antennas 11-jointed, posterior tarsi normal. 



E. Posterior tibiae simple. 



F, Glabrous above. 



G. Elytra punctate. {Haltica. 



' Systena. 

 Gb. Elytra striate. 



H. Thorax_ impressed at base. 



Crepidodera. 

 Hb. Tliorax with a basal plica. 



Balanomorp?ia. 

 Fb. Pubescent. ' Epitrix. 



Eb. Posterior tibiae dentate. \ EupUciroscelu. 



l Ghcutocnema. 

 Db. Antennae 10-jointed, tarsi inserted on the side of the 

 posterior tibiae. Psylliodes. 



Bb. Claws bifid. BlepTiarida. 



Hypolampsis, Clark, Cat. Halt., p. 230. 



Distinct from the other North American genera by the pubescent 

 surface and striate elytra. Anterior coxal cavities closed. 



1. H. pilosa (111.), Mag., vi. p. 105. 



Oblong, brown, reddish beneath, above clothed with long erect 

 dark hairs, and a close griseous rather maculate pubescence ; head 

 deeply punctate, antennae with second joint short, 1-6 pale red, 

 7-11 black, distinctly thickened; thorax quadrate, rounded in 

 front, sides straight, veiy closely punctate ; scutellum griseous, 

 pubescent ; elytra deeply punctate, striate, broader than thorax, 

 sides parallel ; body beneath smooth, shining. L. .10-.12. Vir- 

 ginia, Texas, Illinois, Pennsylvania. 



2. H. Clarkii, Cv., pilosa J, Clk. 1. c, p. 238. 



Evidentl}'- very distinct ; head granulate, ferrugineous, antennte 

 subincrassate, flavous ; thorax transverse fuscous ; elytra broad, 

 5 



