23G GEO. H. HORN, M. D. 



In the male the last ventral segment is slightly sinuate each side, 

 the middle lobe slightly bent upward. The first joint of anterior 

 tarsus is also broader than in the female. 



This insect is similar in color and style of sculpture to Crepidodera 

 rnfipes, but is more elongate and less convex, and the elytral punc- 

 tures much deeper. The two differ radically, in the fact that the an- 

 terior coxal cavities are here open, and in Crepidodera closed. 



Occurs from Ohio to Texas 



Group X. — CREPIDODERA. 



Antennae 11 -jointed, filiform. Prothorax with a well marked ante- 

 basal transverse impression, usually limited at each end. Anterior 

 coxal cavities closed behind. Ventral segments all free. Posterior 

 tibiffi usually feebly sulcate near the apex. Tarsi of moderate length, 

 the claw joint simple. Claws appendiculate. 



This group consists of a portion only of the genera placed there 

 by Chapuis. For the same reasons which have induced me to sepa- 

 rate those genera without distinct ante-basal groove from the Halticse, 

 similar genera have been removed to constitute the group Systence. 

 There is, however, an additional reason here. All the Crepidoderre 

 have the elytra striato-punctate, while in the Systena? the punctua- 

 tion is confused. 



The following genera occur in our fauna: 



All the tibipe witli a terminal spur Hemiglyptiis. 



Posterior tihiie alone with a spur. 

 Body above glabrous. 



Form more or less ovate; aute-basal groove limited each side; antennae not 



unusually long Crepidodera. 



Form elongate, parallel; ante-basal groove not limited ; antenna? as long as 



or longer than body Orthalliea. 



Elytra with rows of seta?, on the interstices. 



Furra short, ovate; anterior angles obliquely truncate; antenuse moderate. 



Epitrix. 



Form elongate, parallel ; anterior angles not obliquely truncate ; antennie 



long I^eptotrix. 



Hemiglyptus occurs in California. Epitrix is represented on both 

 sides of the continent ; the other genera belong to the Atlantic region. 



From the group as constituted in the Classification of Col. N. A. 

 1883, p. 352, in addition to Systena the following are removed : 



Micndiica has 0})en anterior coxal cavities and the sjiecies })laced 

 in Haltica. 



