68 NEW NORTH AMERICAN ACRIDID.E BRUNER. 



the outer edges of the disk of the posterior lobe of the pronotum, and 

 the dorsal edges of the tegmina are also of this color. Wings green- 

 ish yellow on the basal half, followed by a rather broad indistinct 

 fuliginous baud which sends the usual tapering shoot along the preanal 

 area uearly to the base, and continues around the outer edge nearly to 

 the anal angle. Veins and nervules of the apical half dark, also those 

 near the edge of the anal angle. Posterior femora dimly banded; pos- 

 terior tibiae deep blue with pale basal annnlus. 



Length of body, $ , 17 mm , 9 — nim ; of antenna, $ , 9.25 ,um , 9 , — ,m " ; of 

 pronotum, $ , 3.85 mm , 9 —*™- of tegmina, $ , 17 mm , 9,— miu ; of hind 

 femora, $ , 10 mm , 9 , — mm ; of hind tibiae, $ , 9 n,m , 9 , — mm . 



A single male specimen. 



Hab. — Placer County, Cal., in September (Koebele). 



Trimerotropis cyaneipennisn sp. nor. 



Color of posterior wings very dark blue crossed by a moderately broad 

 dark fuliginous baud, as in T. similis Scudd. 



In size and general structure this insect is very similar to T.vinculata, 

 but differs from that species in the more nearly equal size of the sexes, 

 in the slightly larger head with larger and more prominent eyes, the 

 slightly longer and deeper sulcus of the vertex, which here has the lateral 

 carina? nearly parallel and quite prominent, and also the frontal costa 

 deeply sulcate throughout. Besides these differences already mentioned 

 there is a general resemblance in cyaneipennis to the various species of 

 Circotettix, and especially the slenderer ones. In the mottling of the 

 tegmina cyaneipennis resembles T. cceruleipennis Bruuer, from which it 

 is quite distinct in the structure of the vertex and anterior lobe of the 

 pronotum, the latter being plaiu above in cyaneipennis, while in cceru- 

 leipennis it is greatly elevated and tuberculate. The posterior femora 

 are also much heavier in that species than in this. 



General color dark gray with a rusty tinge above in some specimens, 

 profusely mottled and marked with fuscous. Face, cheeks, and occiput 

 gray, profusely mottled below and above between the eyes with brown ; 

 also two diverging bands of the same color on the occiput and another 

 backwards from the middle of each eye. Pronotum with the disk bor- 

 dered on the sides by a rather wide lighter band, also a mesial ray from 

 the front edge and a central quadrate spot of the same color on the 

 sides. Tegmina profusely mottled with rather large quadrate brownish 

 spots, which in most specimens are congregated iuto three patches — 

 the first occupying the basal third, the second the center of the middle, 

 and the third the outer third of the wing — most profuse on the basal 

 and middle areas, but not forming definite bands as in most of the other 

 species belonging to the genus. Wings very dark blue on their basal 

 half, crossed beyond by a rather wide fuliginous band that does not con- 

 tinue around towards the anal angle; apical third hyaline with the 

 veins and nerves black. Posterior femora crossed externally by three 



