Vol. VI] VAN DUZEE— SPECIES OF ORTHOTYLUS 101 



tude of 6,000 to 7,000 feet, during July, 1915. This is a ten- 

 der pale green insect that must depend upon the characters 

 of the male genitalia for final identification. I have also in 

 my collection one pair from Salamanca, N. Y., and an exam- 

 ple from Phoenix, Ariz., that have the same male genitalia 

 and are otherwise inseparable from my Tahoe material. 



Type, male, and allotype in collection of the University of 

 California. Paratypes in Museum of California Academy of 

 Sciences (Nos. 308, 309), collections of the University of Cal- 

 ifornia, and of the author. 



10. Orthotylus translucens Tucker. 



Aspect of uniformis, but smaller with the head obviously 

 shorter and more vertical and the first antennal joint shorter 

 and thicker. Length 4mm. to the tip of the membrane. 



Head small, short. Eyes unusually large and prominent; 

 viewed from the side, ovate, reaching almost to the gula. Ver- 

 tex flat with a large depressed area, the basal carina prominent 

 but obtuse; front scarcely convex; clypeus small, the facial 

 angle obtuse. Antennas, first joint obviously shorter than the 

 head when viewed from above ; the second thick, scarcely thin- 

 ner than the first and about four times longer. Pronotum 

 short, one-half as long as its basal width, the anterior angles 

 well rounded ; callosities not prominent ; basal lobe of the scu- 

 tellum rather broadly exposed. Elytra long, the abdomen 

 reaching to about the middle of the cuneus. 



Male genitalia small, dextral hook short, a little widened 

 toward its apex; sinistral also short and spatulate, but little 

 longer than the dextral, its rounded apex fringed with short 

 hairs. The large ventral aspect of the genital segment with 

 a narrow subacute apex which rather surpasses the hooks. 



Color clear green, becoming yellowish on the base of the 

 scutellum, callosities, head and beneath. Apical two joints of 

 the antennae and tip of the second infuscated. Knees darker 

 green in my examples; apex of the tarsi black. Elytral ner- 

 vures darker green, most pronounced on the costal edge of the 

 cuneus. Membrane very faintly infuscated, iridescent, the ner- 

 vures pale green. Upper surface sparsely clothed with short 

 pale hairs. 



