OF PHILADELPHIA. 163 



ceous, edged with black, excepting the exterior edge near the 

 base ; extreme tip and spot on the anterior part of the humeral 

 tubercle, black : wings fuliginous. 



Length about a quarter of an inch. 



This species resembles the male of dimidiatus Fab., and hume- 

 ratus Fab., but the vertex of those two species, although con- 

 siderably elevated, is rounded at tip, and the former has a robust 

 spine over the middle lobe of the posterior margin of the thorax. 



[I have proposed for this species the name R. Sayi^ 

 (Journ. Acad. Nat. Sc. 2nd ser. 4, 21), for the following reasons: 

 The name proposed by Say was pre-occupied by Olivier ; Dr. 

 Melsheimer on this account substituted the name R. amhiguus 

 but described under that name a variety of R. pectinatus Fabr. 

 (yaricolor Gerstaeker). Although Gerstaecker has placed R, 

 hkolor 01. as a synonym of R. hlmaculatus, this does not obviate 

 the necessity of changing the name imposed by Say under a 

 belief that the name was free. This species is cited by Gerstsee- 

 ker as a synonym of his R. varicohr, but it differs very much 

 from that species by the anterior face of the vertex being flat- 

 tened, and the posterior margin so broadly rounded as to appear 

 truncate, as above noted by Say. — Leg.] r2761 



ANASPIS Geofl-. Latr. 



1. A. TRILOBA. — Black, covered with dirty yellowish hair; 

 elytra with three black bands, and two spots at base. 



Inhabits Missouri and Pennsylvania. 



Body deep black, covered by dense, short, dull yellowish hair : 

 antenn33 testaceous, black at tip : palpi testaceous : thorax trans- 

 versely quadrate ; angles rounded ; posterior margin lobed in the 

 middle, lobe truncate ; disk with a trilobate black spot, confluent 

 before : scutel distinct : elytra each with a humeral and scutellar 

 black spot, and three subequal, equidistant black fascia, the last 

 terminal : pectus and postpectus with subargenteous hair : feet 

 black; anteriores, tibia, and tarsi testaceous; posterior pair, 

 tibia and tarsi piceous. 



Length about three-twentieths of an inch. 



Considerably resembles Mordella trifasciata of Melsh. Catal. 

 but the species here described has three distinct bands of vel- 

 1824.] ^ 



