132 GEO. H. HORN, M. D. 



and the basal transverse impression much deeper. Some specimens 

 from the peninsula of California have the epipleurae brownish becom- 

 ing testaceous toward their apices, otherwise they are identical with 

 those from Arizona which correspond with the description by Chau- 

 doir. Length .28 — .38 inch; 7 — 9.5 mm. 



Occurs in Texas, Arizona and Peninsula California. 



Ii. atriceps. Lee. New Species, p. 5. 



This species agrees with majuscula in having the fourth joint of 

 the hind tarsi very feebly emarginate. Head black, punctured and 

 feebly wrinkled. Antennae black, three basal joints and base of fourth 

 pale yellow testaceous. Thorax and elytra resemble those of atrioen- 

 tris. The body beneath is entirely black except the side pieces of the 

 metasternum, the mesosternum and thorax which are rufo-testaceous. 

 The femora are rufo-testaceous tipped with black at the knees, the 

 tibiae and tarsi entirely black. Varieties occur with the tibiae brown- 

 ish-testaceous. Length .26 — .30 inch; 6.5 — 7.5 mm. 

 Occurs in Kansas and Nebraska. 



Lebiid^e ver^:. 

 This group contains those species in which the epilobes of the men- 

 turn are not distinct. The group is divided by Chaudoir into many 

 genera founded on characters which appear to be of a nature too 

 feeble to be used for generic distinction. Our genera have the tarsal 

 claws pectinate or serrate, with teeth not exceeding in number Jive, 

 other genera have teeth to the number of six or over. 

 The following genera occur in our fauna : 



Mentum with a distinct tooth Iiebia. 



Mentum not toothed. 



Head behind the eyes constricted Dianchomeiia. 



Head behind the eyes not constricted Aphelogenia. 



LEB1A., Latr. 



This genus contains by far the larger number of our species separ- 

 able in our fauna by well defined characters. The following dicho- 

 tomous table will enable the student to recognize our species, it being 

 nearly a copy of that of Chaudoir in order that foreign students may 

 the better trace the resemblances between any of our species and those 

 which are exotic and also to exhibit the positions therein of species not 

 known to Chaudoir. 



