VO i889. n '] PROCEEDINGS OF THE NATIONAL MUSEUM. 71 



Size of T. cyaneipennis. 



Hab. — Los Angeles, Cal. (D. W. Coquillett). 



This locust has something of the appearance of a species very common 

 in the vicinity of Ogden, Utab, that I have referred to T. citrina Scudd., 

 but is much heavier in its structure. It and T. pacificus were taken 

 upon a sandy, rather barren soil, judging from their glossy appearance. 



In addition to these there is a third species of this genus, which ap- 

 pears to be new. The specimens here described were received from the 

 same gentleman. 



Trimerotropis californica sp. nov. 



In size and general appearance this insect comes very close to T. 

 coeruleipennis Bruner, from which, however, it is quite distinct as the 

 color of the posterior tibiae aud wings will at once indicate. It is also a 

 somewhat slenderer species than the one named above. 



Vertex between the eyes moderately broad, fastigium as in T. coeru- 

 leipennis, partly closed in front by the meeting of the lateral cariuae 

 which separate it from the rather deep quadrangular pit at the upper ex- 

 tremity of the frontal costa. Froutal costa nearly equal to ( $ ) or expand- 

 ing considerably ( 9 ) below the ocellus; not very deeply sulcate. Anten- 

 na? normal, not annulate, nearly black. Pronotum with the anterior lobe 

 somewhat elevated, though much less so than in the species above re- 

 ferred to, rather coarsely granulose; median carina well defined, poste- 

 rior border a right angle, lower posterior lateral angles acute. Tegmina 

 and wings moderately long and narrow, surpassing the abdomen nearly 

 one-third of their length in the male, and about one-fourth in the female. 

 Posterior femora nearly ( 9 ) or quite ( $ ) reaching the extremity of the 

 body, somewhat slenderer than in T. coeruleipennis. 



General color above dirty yellowish gray profusely flecked with dull 

 brown and black spots and dots. Tegmina with these brown spots con- 

 gregated into three irregular, dim bands, situated as in T. vinculata. 

 Wings yellow on the basal half, crossed in the middle by a moderately 

 broad, dark, fuliginous band, which sends a humeral ray nearly to the 

 base as well as along the humeral vein almost to the apex; apical por- 

 tion hyaline, with the median, axillary and subaxillary veins black. 

 Posterior femora crossed externally by three slightly oblique dusky 

 bands, internally by the one nearest the apex; basal half and apex also 

 black. Posterior tibiae with the base black, followed by a moderately 

 wide annulus of whitish yellow, below which they are a bright coral red ; 

 tarsi also red. There is also a reddish hue upon the upper side of the 

 abdomen — most decided in the male — yellowish white beneath. 



Length of body, $ , 22 n,ni , 9 , 24 mm ; of antennas, $ , 11.25 mm , 9 , 9""" ; of 

 pronotum, $ ,4.42 mm , 9 , 5 mm ; of tegmina, $ , 24 mm , 9 , 25 mm ; of posterior 

 femora, 3,11.75 mm , 9,13"""; of posterior tibiae, $ , ll« nm , 912.15""". 



Described from two males and a single female. 



HAB.— San Louis Valley, Cal. (D. YV. Coquillett). 



