122 The University Science Bulletin. 



Distribution. This species is evidently a southwestern form, for 

 all the material at hand was taken in this region. The following 

 are the locality records of the twenty-two specimens examined: 

 Type specimens from San Augustine, N. M. (C. F. Baker) ; On- 

 tario, Riverside, Cal. (E. D. Ball) ; Santa Rita mountains (F. H. 

 Snow), Galiuro mountains (H. G. Hubbard), Phoenix (E. D. Ball), 

 Sabino Canyon, St. Catalina mountains (E. L. Dickerson) , all from 

 Arizona; Brewster county, Texas (Mitchell and Cushman). 



Remarks. As far as the writer knows, this species has been known 

 hitherto only from the type. In the material gathered for the study 

 of the genus he found a number of similar specimens, which, while 

 differing in some ways, particularly in the length of the vertex and 

 the extent of the elytral markings, are yet thought to be representa- 

 tives of this species, for a careful study of the genitalia of several 

 males revealed no differences, although the vertices of the specimens 

 were quite unlike. Also the specimens show a complete range in 

 color from that of the very light type specimen to forms that are 

 distinctly brownish. While frankly having some doubt as to the 

 specific identity of all the material named thus, the writer feels it 

 better to call them all the same species rather than to describe new 

 species on insufficient material. 



Acinopterus productus n. sp. 



(PI. VIII, fig. G; pi. IX, fig. 2; pi. X, fig. 3; pi. XI, fig. 3; pi. XII, figs. 13, 14.) 



A distinctly greenish species, differing from other green forms by the acute 

 apex of the tegmina and the produced vertex. 



Form. Head distinctly narrower than pronotum. Vertex less than twice as 

 wide as long, at least half longer at the middle than next the eye, the apex 

 rounded and with an impressed line parallel with the margin. Face character- 

 istic of the genus. Pronotum short, well over twice as wide as long, the ante- 

 rior margin more strongly curved than the posterior, the lateral and humeral 

 margins about equal, the disc transversely wrinkled. Scutellum with the usual 

 granular surface 8,nd impressed line. Tegmina long and rather narrow, the 

 costal margin running straight clear to the tip, forming an acute apex, and 

 with the nervures distinct, the fii-st and second anal veins usually united by 

 several cross-veins. 



Color. The entire insect is green except for the darkened apices of the ely- 

 tra and the yellowish or pinkish legs. The nervures stand out as a lighter 

 green than the cells of the tegmina. 



External genitalia. Female: Last ventral segment over twice as long as 

 the preceding, the medially produced posterior margin with the usual small 

 notch, the lateral margins rounding with the posterior. Pygofers rather ro- 

 bust, sparsely spined, and slightly exceeded by the ovipositor. Male: Valve 

 hidden by the long last ventral segment. Plates longer than last ventral seg- 

 ment, fairly wide basally, tapering to the divergent and rounded but com- 



