OF WASHINGTON. 163 



persistent, less distinct between the sulci ; lateral carina present only 

 posterior to the principal sulcus ; lateral lobes vertical, the posterior 

 angles rounded. Elytra and wings slender, reaching about one-fourth 

 of their length beyond the end of the posterior femora. Hind femora 

 considerably compressed, the upper margin more curved than the in 

 ferior. 



Color brown, mottled quite uniformly with fuscous, lighter in the 

 male and much less maculate with fuscous, almost uniformly light grayish- 

 brown. The head has an obscure postocular band and the upper part of 

 the lateral lobes is somewhat infuscated, scarcely so on the metanotum, 

 scarcely noticeable in the male. Abdomen much lighter in color than the 

 rest of the body. Elytra in the female considerably flecked with fuscous, 

 in the male almost immaculate. Posterior femora brownish externally, 

 paler towards the tip, except the upper half of the genicular arc 

 which is piceous, internally the geniculation is wholly black and the 

 face is marked with one distinct and one imperfect black band dividing the 

 surface into three nearly equal parts, the imperfect band being basal and 

 not showing on the dorsal surface of the femora, while the perfect band 

 continues over the dorsal surface and slightly onto the outer face, neither 

 band showing in the ventral sulcus, which is uniformly light brown. 

 Hind tibiae dull yellow with a small black spot at either extremity below. 



Length, body, <^\ 17 mm., 9> 2 4 mm.; antennae, rj\ 6 mm., 9' 6.5 

 mm.; elytra, ^, 16 mm., 9> 2I -5 mm.; hind femora, rj\ g mm., 9> ll 

 mm. 



Type No. 6705, U. S. National Museum. 



One male and one female from Phoenix, Arizona, collected 

 September 10, 1902. 



This species is very like Ligurotettix coquilletti, but is much 

 more slender, lighter in color, and the posterior femora are not 

 so distinctly banded above. The measurements are also consid 

 erably greater. 

 Encoptolophus subgracilis sp. nov. 



Head moderately large, about as broad as the posterior part of the 

 pronotum ; eyes quite prominent, about as long as the infraocular part 

 of the genae and generally with a more or less distinct fuscous band 

 running horizontally across the middle, especially in the male. Vertex 

 about as broad as one of the eyes, furnished posteriorly with a very 

 distinct carina, the margins well elevated, converging in front to form 

 the sides of the frontal costa, which is moderately narrow, approximately' 

 half as broad as the interspace between the eyes, equal in the female, 

 narrowing apically in the male, quite deeply sulcate, especially at the 

 ocellus, and below just failing to reach the clypeus. Antennae short, 

 very slightly broadening apically, at least in the female. Pronotum 

 more slender than usual in this genus, broader behind and with the 

 lateral lobes almost perpendicular and more angulate behind than 

 usual in allied species ; median carina better developed than in palh'dus, 



