290 GEO. H. HORN, M. D. 



CHRYSOMELIDAE. 

 HISPINI. 



The coleoptera forming this tribe of Chrysomelidae are so well 

 known as not to need at present any general remarks. 



Those occurring in our fauna are divisible into several groups in the 



following manner : 



Tarsal claws simply divergent. 



Third joint of tarsus deeply bilobed. 



Antennae filiform or fusiform Microrhopalides. 



Antennae clavate. Elytra with oblique plications Octotomides. 



Third joint of tarsus not bilobed, fourth joint long. 



Antennae very short, clavate Stenopodiides. 



Tarsal claws widely divaricate. 



Antennae filiform Callispides. 



Microrhopalides. 

 Form more or less oval to cuneiform. Antennae filiform, 8-11 jointed. Tarsal 

 claws divergent, the claw joint projecting at most one-third its length beyond the 

 deeply bilobed third joint. 



This group corresponds with the Cephalodontites of Chapuis, and the 

 name has been changed because the genus from which the name has 

 been derived does not appear distinct from Odontota, which Harold in 

 his turn replaces by Chafepus. 



Our genera are as follows : 

 Antennae with S joints, the last four being closely connate. 



Elytra oval, convex, not or feebly costate Microrliopala. 



Antennae with 11 distinct joints. Elytra costate. 



Middle tibiae straight Odontota. 



Middle tibiae curved Cliaristeua. 



HICRORHOPALA Chev. 

 Head small, rounded, front slightly convex. Antennae apparently with but 8 

 joints, the last four being closely united in an oblong mass. Thorax usually 

 broader than long and wider at base. Elytra with rows of punctures,, the inter- 

 val costiform or not. Legs short, tibiae straight, slightly broader toward the tip-- 

 Third tarsal joint deeply bilobed, the fourth joint usually not longer than the 

 lobes, rarely much longer. 



Microrliopala, as here constituted; contains also the species in our 

 fauna referred in the books to Uroplata. There seem to be no valid 

 characters for separating these genera. Certain of our species are re- 

 ferred by Chapuis (Genera des Coleopteres, XI, p. o'l'l ) to a section of 

 the latter genera called Pentispa, characterized by the head having five 

 longitudinal grooves on the vertex. I have never observed more than 



