or PHILADELPHIA. 171 



A very remarkable and distinct species ; the reticulated elytra 

 give it a very peculiar aspect. The antennae are similar to those 

 of L. Nuttalli, but the body is proportionally shorter. [306] 



NEMOGNATHA Illig. 



1. N. ATRiPENNis. Testaceous; elytra black. 

 Inhabits Arkansa. 



Testaceous, punctured : head with concave punctures, remote 

 on the vertex and confluent between the antennse : antennoe, 

 mandibles, and palpi, black : labrum piceous : thorax, punctures 

 rather large, remote : elytra black, punctures profoundly impres- 

 sed, rather distant, more numerous on the margin and tip : post- 

 pectus, knees, tibia at tip, and tarsi, black. 



Length less than two-fifths of an inch. 



Found near the base of the Rocky Mountains, and between 

 the rivers Arkansa and Platte. 



The genera Zonitis and Ncmof/natha are similar to the genus 

 Horia in the form of the tarsi, which are bifid and pectinated, 

 in this respect widely diff"ering from Lytta, &c., of which the 

 tarsi are simply bifid. 



2. N. MINIMA. — Testaceous; head and thorax elongated; post- 

 pectus black. 



Inhabits Arkansa. 



Body somewhat elongated, testaceous, punctured, with numer- 

 ous hairs : head elongated : vertex obtusely and slightly indented : 

 antennae black, dusky, rufous at base : labrum blackish : palpi 

 dusky : maxillae blackish, elongated : thorax conic, much nar- 

 rower than the elytra :' elytra paler than [307] the head and 

 thorax, punctures confluent: postpectus, and venter at base, 

 black : feet varied with dusky : tarsi black. 



Length from one-fourth to three-tenths of an inch. 



This is the smallest species I have seen ; it is proportionally 

 much narrower than others. I observed numbers of them near 

 the Rocky Mountains. It belongs to genus Gnatho of Kirby. 



[Unknown to me. — Leg.] 



BRUCHUS Fab. 



B. DiscoiDEUS. — Black, with dense cinereous hair beneath ; a 

 large rufous spot on each elytron ; anus white, with four spots. 



Inhabits Arkansa. 

 1824.] 



