NATURAL SCIENCES OF PHILADELPHIA. 43 



as in Criocephalas, but much more emarginate than in the other species of that 

 genus. In the latter respect, however, C. australis (Asemum australe Lee.) 

 is an intermediate form. 



24. Prionus i n n o c u u s, rufo-piceus, nitidus, thorace modice punctato, lati- 

 tudine triplo breviore, angulis omnibus valde rotundatis, lateribus rotundatis. 

 paulo undulatis, elytris thorace fere sesqui brevioribus, latitudine vix se*qui 

 longioiibus, sat fortiter punctatis, apice singulatim rotundatis; antennis(9) 

 13-articulatis. Long. '90. 



New Mexico ; Mr. Ulke. More robust in form than any other species known 

 to me ; the eyes are of the same size as in P. integer Lee. 



Synopsis of the MORDELLIDJE of the United States. 

 BY JOHN L. LE CONTE, M. D. 



In investigating the numerous species of this family contained in our fauna, 

 I have recognized other genera, in addition to those noted by me in the Smith- 

 sonian Contributions, in my paper on the Coleoptera of Kansas and New Mexico. 

 I have also become convinced that the genus Sphalera established upon Mor- 

 della m e 1 a e n a Germ., is not tenable, the relative proportion of the outer 

 joints of the antennae being a specific rather than a generic character. 



With these changes, our genera may be arranged in two tribes, as follows : 



A. Abdomen without anal prolongation ; claws not cleft ; hind 



coxae moderate ANASPINI. 



Anterior and middle tarsi with 4th joint equal to 3d ; 



Antenna? long, scarcely thickened externally Diclidia. 



Antennae shorter, last five joints broader Pentaria. 



Anterior and middle tarsi with 4th joint very small Anaspis. 



B. Abdomen, with the last dorsal segment prolonged, conical ; 



claws cleft and pectinate ; hind coxae very large MORDELLINI. 



a. Hind tibiae with a small subapical ridge ; eyes finely 



granulated ; 

 Scutellum emarginate behind, eyes not reaching the 



occiput Tomoxia. 



Scutellum triangular, eyes reaching the occiput ; 



Anal style emarginate, last joint of maxillary palpi 



very transverse, securiform Glipa. 



Anal style entire, last joint of maxillary palpi tri- 

 angular or slightly securiform Mordella. 



b. Hind tibiae and tarsi with oblique ridges on the outer 



face ; eyes coarsely granulated ; 



Hind tibiae without subapical ridge Glipodes. 



Hind tibiae with the subapical ridge distinct Mordellistena. 



Tribe 1. ANASPINI. 



The hind coxae are somewhat larger in Anaspis than in the other two genera, 

 and are shaped as in Mordella, though by no means as largely developed as 

 in that genus. The characters of the tribe are : 



Hind coxae not or but slightly dilated ; tibiae slender, claws not cleft nor 

 serrate ; last dorsal segment not prolonged ; 6th ventral segment not visible 

 in Anaspis, visible in Pentaria and Diclidia ; eyes oval, narrowly emarginate ; 

 antenna? inserted very near the eyes, not serrate. Body transversely strigate, 

 pubescent. The species are found on plants. 



Diclidia. 

 The only species known to me is Anaspis laetula Lee, which differs 

 1862.] 



