74 ENTOMOLOGICAL NEWS. [March, '05 



Apex of last ventral produced in a nearly parallel-sided lobe which is 



obtusely rounded at tip elata. 



First ventral suture straight ; prothorax without well defined lateral im- 

 pressions ; the alternate elytral intervals only slightly more 

 elevated velasco. 



The form of the last ventral does not vary much in the sexes 

 of calif arnica and elata, though the apical lobe is a little less 

 prominent in the female of the latter species. In a male of 

 velasco from Yuma, California, the last ventral is sinuate and 

 subacuminate at apex ; while in a female from Texas it is 

 angulate. I unfortunately have not both sexes from the same 

 locality. In a female from Oak Creek Canon, Arizona, re- 

 cently submitted by Prof. Snow, the last ventral is more acutely 

 angulate and the elytral costse more pronounced. This is pos- 

 sibly a distinct species, but more specimens of both sexes 

 should be seen before passing judgment. It is not possible at 

 this time to express any opinion as to the validity of P. cavata 

 Lee. and P. obtnsa L/ec. The former, described from Alabama, 

 has been placed as a synonym of data ; and the latter, de- 

 scribed from Philadelphia, is referred to velasco. 



Recognition of two North American Species of 



Cicada Latr. 



BY P. R. UHLER. 



i. Cicada townsendii n. sp. 



An unusually robust form appearing to be closely related to C. monle- 

 zuma Dist. Color of head and pronotum greenish (fading to pale tawny), 

 marked with black ; the ground color of mesonotum and tergum brown- 

 ish black, marked with reddish brown and greenish, the middle and sub- 

 marginal curved lines being green and powdered with white bloom, as is 

 also the surface beneath. Head stout, as wide as the front of pronotum, 

 if the obliquely set eyes be included ; front tumidly prominent, black, 

 having a pale line down the middle and a spot of the same color each 

 side, superiorly, and a larger pale spot on the cheeks, sulcations of the 

 cheeks obliquely and deeply grooved ; the rostrum extending behind the 

 middle coxae, the eyes prominent. Pronotum greenish, or pale tawny 

 when dried, the posterior border with a greenish band and the anterior 

 margin more narrowly greenish, a large triangular black spot is on the 

 middle back of the front margin, and on this a short greenish, longitudi- 

 nal line runs back a little more than half the length, each side of the black 



