BUFFALO SOCIETY OF NATURAL SCIENCES 501 



and oriental genera the specialization has been more along the 

 line of a complicated venation. 



Key to the nearctic species of Lamenia. 

 Elytra fuscous or black, 1. 



Elytra white clouded with fuscous in the areoles, 



6, maculata. 



1. Elytra blackish fuscous; male plates with an apicartooth, 2. 

 -. Elytra pale brownish fuscous; male plates without an 



apical tooth, 5, edentula. 



2. Head piceous black or mostly so, 3. 

 -. Head fulvous or testaceous, 4. 



3. Larger (5 mm. ) ; inner margin of the male plates 



sinuated, 1, vulgaris. 



-. Smaller (4 mm.) ; inner margin of the male plates recti- 

 linear or with a reentrant angle more or less pro- 

 nounced, 2, obscara. 



4. Smaller (4^2 mm.); head and pronotum flavo-testa- 



ceous, mesonotum piceous ; inner margin of the 

 male plates excavated for nearly their whole 

 length, 3, californica. 



-. Larger (5 mm.); head, pronotum and mesonotum fulvo- 

 testaceous; inner margin of the male plates pro- 

 duced, contiguous at their middle only, 4, prcecox. 



1, Lamenia vulgaris Fitch. 



Catal. Homop. Ins. N. Y. State Cab., p. 47, 1851, 

 {Pcecilopteraf). 



Van Duzee, Can. Ent. , xli, p. 381, 1909, {Lamenia). 



This large northern species has the lateral carina? of the 

 front marked with pale toward the base and the legs and post- 

 pectus are also pale. Sometimes the abdominal segments are 

 touched with orange as mentioned by Dr. Fitch. The pronotum 

 is conically, almost angularly, emarginate behind and there is 

 a distinct carina across the base of the front. 



The male plates have their inner margins divergent on 

 their immediate base, then somewhat sinuated to their apex 

 which has an unusually large pale tooth. Last ventral segment 

 of the female triangular with its margins nearly rectilinear. 

 My material in this species represents New York and Kansas 

 only, but I have seen specimens from most of the northeastern 

 states and Canada. 



