Sept. 1899.] Morse: New North American Tettigin.^. 199 



One 9, Arizona (Cornell Univ.), and 18 ^ ^, 20 9 9, from the 

 following localities in California : Ahwanee, Colton, Sacramento, San 

 Bernardino, and Tulare, July 15 to x\ug. 27, usually in company with 

 typical tolteciis. 



Merotettix, gen. nov. 



Posterior sinus of lateral lobes of pronotum shallow, in the type the caudal margin 

 of upper lobe about one-half as long as the ventral margin. Frontal costa of face 

 narrowly forked, the branches straight and evenly divergent. Body relatively com- 

 pressed in the type, the humeral angles very obtuse, and shoulders narrow. The type 

 is J/, pristiuus, described below. 



This genus is intermediate between Paratettix Boli\'ar and Neotettix 

 Hancock. It is more nearly related to the latter in the shallowness 

 of the posterior sinus of the lateral lobes of the pronotum and general 

 form, but differs from it especially in the structure of the frontal costa 

 of the face and slender form of body. 



Merotettix pristinus, sp. nov. 



Vertex resembling that of Paratettix rtigosus but narrower, its front margin 

 equal in width to an eye or slightly less, somewhat convex, projecting very little in 

 advance of the eyes, narrowly sulcate on each side of the mid-carina at its union with 

 the frontal costa ; the crown between eyes broadly and shallowly sulcate on each 

 side of high median ridge, rapidly widening backward from the middle of the eyes. 

 Face in profile quite retreating below antennse, the frontal costa roundly protuberant, 

 scarcely sinuate above ; forks of the costa straight, slightly and evenly divergent. 



Pronotum scabrous or rugose ; disk nearly flat, slightly elevated in front of shoul- 

 ders, the front margin truncate ; mid-carina distinct throughout, highest and almost 

 sub-cristate midway between fxont margin and shoulders, undulate behind ; lateral 

 carinse distinct, their anterior portions converging behind ; shoulders narrow and with 

 very obtuse humeral angles ; hind process with straight sides, acute, sometimes de- 

 flected apex, about reaching posterior knees. Posterior sinus of lateral lobes very 

 shallow, the caudal margin of the upper lobe less than half as long as the ventral 

 margin. Wings two-thirds or three-fourths as long as the pronotal process, but ap- 

 parently abortive. Fore and middle femora slender with entire or slightly sinuate 

 margins ; hind femora only moderately stout, much less so than in Neetettix. Hind 

 tarsi with first joint distinctly longer than succeeding ones united, pulvilli straight or 

 rounded below, acutely pointed, the third nearly as long as the others combined. 



Body: (?, 6.5-7.5; 9 > 8-9. Pronotum: J' , 6-7 ; 9, 7.7-9. H. fem. : $, 

 4-5-5; 9' 6 mm. 



Four $ $ , four 9 9 ("mostly in poor condition) San Domingo, M. A. Frazer 

 (S. H. Scudder). 



In the form of the vertex (except width) and facial costa and the 

 rugosity of pronotum this species resembles Paratettix rugosus, but is 



