TO 1889."'] PROCEEDINGS OF THE NATIONAL MUSEUM. 73 



lateral carinas; frontal costa of nearly equal width throughout, sulcate 

 only at the ocellus. Face minutely punctate, the punctse brown or 

 black. An tenure of the normal length, light testaceous, with very faint 

 aunulations of a darker color. Pronotum somewhat smoother than 

 usual, the anterior lobe but gently raised above; the median carina 

 rather faint and nearly equal; posterior angle slightly acute in the 

 male, about a right angle in the female; posterior lateral edges furnished 

 with a minute tooth-like downward projection as in T. calif arnica and T. 

 pacifica, the lower angle with the apex minutely rounded. Tegmina 

 moderately narrow, the veins and cross-veins not prominent, the latter 

 more numerous than usual on the apical third. Posterior femora nor- 

 mal, reaching the tip of the abdomen in both sexes; posterior tibire in 

 the single female specimen examined greatly sinuous. 



General color dark gray ( S specimen) to testaceous gray ( 9 specimen), 

 evenly and minutely flecked with dusky dots, thereby giving the surface 

 a granular appearance. Tegmina very dimly ( 9 ) or with the bands 

 moderately well defined, brown and arranged as in T. vinculata ( $ ). 

 Wings deep sea-green, a little the lightest in the female, with a very faint 

 fuliginous arcuate band just beyond the middle in the male, but in the 

 female indicated only by the infuscation of the nerves belonging to that 

 region; apical portion hyaline with most of the veins dark. Posterior 

 femora black internally with a preapical yellowish annulus, externally 

 without any bauds, but furnished with an upper and lower elongate 

 black spot in advance of the pale annulus. There is also a faint green- 

 ish tinge on the basal portion of the abdomen above. 



Length of body, S , 20'"'", 9 , 26 mra ; of autennre, <$ , 9 m,n , 9 , 9.35 mm ; of 

 pronotum, i\ 4.4 mm , 9,5.25 mm ; of tegmina, $, 2L 1 " 1 ", 9 , 20""" ; of hind 

 femora, $ , 10.5 mm , 9 , 13.85 mm ; of hind tibiae, $ , 9 mm , 9 , 12.15""". 



Hab. — Los Angeles, Cal., in September and October (A. Koebele). 



Trimerotropis pacifica sp. nov. 



Size and markings similar to those of T. vinculata. Pronotum quite 

 long and smooth. Head deeper than usual in the genus. 



This locust has a slight general resemblance to one form of Hadro- 

 tetti.v trifasciatus Say, and, if it were not for other characters which for- 

 bid its being placed there, I should feel inclined to refer it to that genus. 



Head and thorax deeper than usual in the genus, with the cariure 

 and angles well defined, but otherwise appearing smooth and glossy to 

 the naked eye. The magnifying glass, however, reveals numerous small 

 pits or poculi that are evenly distributed throughout the face as well as 

 the anterior lobes of the pronotum. Fastigium of the vertex flat, slop- 

 ing gently forward and divided into two lateral halves by a rather 

 prominent median carina, with the lateral edges rather blunt but plainly 

 visible, continuous with the carina? of the frontal costa, expandingslightly 

 but evenly downward, fading before reaching the clypeus, deeply sili- 

 cate, deepest at the ocellus, bounding walls prominent but rounded, 



