June-Sept, i 9 i9.] Davis : Cicadas. 187 



the last. Expands about 55 or 60 mm. 



vanduzeei var. consobrina Distant 



Dorsal markings of the pronotum still more 



extended and confluent ; beneath, abdomen 



almost entirely yellowish, valve yellowish. 



Expands about 57 mm. 



vanduzeei var. californica Distant 

 EE. Front of head conspicuously produced; silken hairs 

 on under side of abdomen short and incon- 

 spicuous. 

 Dorsal surface with much appressed golden pubes- 

 cence ; abdomen black and yellowish above, and 

 usually entirely yellowish beneath. Basal cell 

 usually transparent. Expands about 53 mm. 

 striatipes (Haldeman) 

 Dorsal surface with the hairs more upright than 

 in striatipes, which it much resembles in mark- 

 ings. Dorsum of abdomen black, beneath cen- 

 tral area usually black with hind margins of 

 segments reddish. Basal cell darkened. Ex- 

 pands about 60 mm utahensis new species 



DD. Expand about 52 mm., usually much less. 



G. Fore and hind wings, except marginal cells, in- 

 fuscated. Uncus when viewed from behind with 

 hook terminating in a broadly rounded notch. 



Expands about 52 mm hesperia (Uhler) 



GG. Fore and hind wings clear except at extreme base, 

 where the membranes are orange. 

 Yellowish or yellowish green ; front conical and 

 prominent. Expands about 50 mm. 



pallidula Davis 

 Smaller and darker than the last ; head small ; 

 front not so prominent. Venation approaching 

 the next two species. Expands about 42 mm. 

 uncinata Van Duzee 

 CC. Marginal cells short ; the third one in fore wings about one 

 half as long as second ulnar area adjoining and im- 

 mediately behind it. 

 H. Both pairs of wings clear except near base. 



Head including eyes about 5 mm. broad. Expands 



about 40 mm mercedita Davis 



Head including eyes about 4 mm. broad. Expands 



about 35 mm minuta Davis 



HH. Both pairs of wings clouded, particularly the basal 

 half of front pair. 

 Head including eyes about 4.5 mm. broad, membranes 



