408 COLEOPTERA OF NORTH AMERICA. 



Our genera are three: — 



Anterior and middle tarsi with the 3d and 4th joints equal ; 



Antennae long, scarcely thickened externally. Diclidia. 



Antennae shorter, last five joints broader. Pentaria. 



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



Diclidia coDtains one species from Texas. Pentaria Muh. was 

 separated by Dr. Le Conte formerly as AnLlwhatea, but under 

 false characters, so that the name should be rejected, and the 

 more "recent one adopted; the species are found on each side of 

 the continent, and have the elytra ornamented with broad bands. 

 Anaspis is also found on both sides of -the continent. 



Tribe II.— JWORDELLIXI. 



Body cuneiform, pointed behind; hind coxa? very large; hind 

 tibiae short, dilated, triangular; claws cleft to the base, with the 

 upper portion pectinate ; last dorsal segment of abdomen pro- 

 longed, forming an anal style or process; eyes large, oval, finely 

 or coarsely granuhited ; antennae inserted in front of the eyes, but 

 not very near to tliem, sometimes serrate. 



Our genera may be separated as follows: — 



Eyes finely granulated ; hind tibiae with a small, subapical ridge : 



Scutelluni emarginate; anal style short, obtuse. Tomoxia. 



Scutellum triangular; anal style long, slender. Mordella. 



Eyes coarsely granulated ; hind tibiae and tarsi with oblique ridges on the 

 outer face ; 



Hind tibiae with one long ridge, and no subapical one. Glipodes. 



Hind tibiae with subapical and oblique ridges. Mordellistena. 



Glipodes is very remarkable for the structure of the last joint 

 of the maxilhiry palpi in the male; it is covered on the under 

 surface with a dense brush of short hair, and from the base ou the 

 outer side proceeds a long, bifurcated appendage, the branches 

 of which are as long as the joint itself. Tomoxia inchides Glipa 

 Lee. Sphalera Lee. has been suppressed intg Mordella. 



Mordella and Mordellistena occur on both sides of the conti- 

 nent ; the other genera are thus far known only in the Atlantic 

 States. 



