116 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser, 



covered or nearly so. Elytra parallel, narrow, apex of the ab- 

 domen but little surpassing the base of the cuneus in the male, 

 hardly attaining its apex in the female. Rostrum and hind 

 tibiae unusually long, the former attaining the base of the hind 

 coxae, 



Redescribed from two females, one taken by me at Denver, 

 Colo., July 12, 1900, the other, also from Colorado, was sent 

 to me by Prof. Carl F. Baker with the label Diommatus angii- 

 latus Uhler; they, however, differ from Uhler's description in 

 several points. The clypeus is paler in one of my specimens 

 and not darker in the other, the hind lobe of the pronotum is 

 distinctly paler and the clavus is deep fuscous and not pale yel- 

 lowish as described by Uhler. There is, however, just such a 

 pale area on the base of the corium adjoining the claval suture. 

 The apex of the cuneus is also but little darkened. These dis- 

 crepancies can all be accounted for by the ordinary variations 

 found in this genus except the pale clavus, a character found 

 in no species of this genus known to me. It is not unlikely that 

 Dr. Uhler thoughtlessly mistook the cuneate pale mark on the 

 base of the corium for a pale clavus. Unfortunately I have no 

 males of this form. 



An examination of one of Uhler's types, kindly sent to me 

 for study by Prof. Gillette, confirms in every respect my deter- 

 mination as given above. 



24. Orthotylus angulatus brunneus, new subspecies. 



This form is very close to that described above as angulatus 

 except that the pale mark on the base of the corium is reduced 

 to a line along the claval suture, and the costal margin is nar- 

 rowly pale. 



Male genitalia small ; dextral hook ovate at apex ; the sin- 

 istral lying along the margin of the sinistral notch, its apex 

 curved upward and acute. 



Founded on numerous examples taken on willows at many 

 localities in San Diego County, Calif., from April to June. It 

 is possible that an examination of the male genitalia of angu- 

 latus will show this to be a distinct species, but that is not likely 

 to be the case. 



