V °im U '] PROCEEDINGS OF THE NATIONAL MUSEUM. 53 



above Posterior tibiae testaceous, the spines black-tipped. Antennas 

 grayish-brown. 



Length of body, 8 , 15.5 ,mn , 2 , 21 mm ; of antenna?,, $ , 8-10 mm , 9 9""" ; 

 of pronotiun, 8, 2.4o""", 2, 3.35"""; of tegmina, $, 11.5 mm , 9,14"""; 

 of hind femora, S , 9.25 mm , 9 , 11.2'""'; of tibiae, S , 8""", 9 , K) 1 "" 1 . 



Dab.— Fort McKiuney, Wyo., Birch Creek, Idaho, and Burleigh 

 County, Dak. (Bruner), northwest Nebraska (Bruner). 



This and occipitalis are frequenters of the mountain slopes and foot- 

 hills, and especially so where these localities are somewhat sandy. Like 

 crenulata, they are most partial to partly bare surfaces, and are very ac- 

 tive in their movements. The present species reminds one not a little 

 of the different members of the genus Mermiria in its general appear- 

 ance and actions. 



Mermiria texana sp. uov. [PI. I, Fig. 11.] 



A rather robust species with comparatively short hind legs. Dark 

 brown, testaceous, and dirty white or pale lavender. 



Head moderately short, the vertex short (though not quite so short 

 as in .1/. bivittata), narrow, rounded in front, with but very slight traces 

 of raised lateral carime and no median carina; frontal costa plainly visi- 

 ble throughout but not prominent, straight, narrow above and gradu- 

 ally widening below ( $ ), or with the sides parallel ( 9 ), sulcate through- 

 out. Eyes large and moderately promiuent, elongate pyriform — as long 

 as that portion of the cheeks immediately below them. Antenna? rather 

 narrow, reaching one-third of their length beyond the hind extremity 

 of the pronotum. Pronotum short and broad, the sides nearly parallel, 

 rounded above on the anterior and nearly flat on the posterior lobe, 

 which is rather coarsely punctate; median carina quite prominent, 

 severed back of the middle by the last transverse impressed line; 

 lateral carinas nearly obsolete; anterior margin slightly concave; poste- 

 rior margin very broadly rounded. Tegmina broad, the apex rounded, 

 with the veins quite prominent, reaching beyond the tip of the body 

 in both sexes. Posterior femora shorter and heavier than usual, not 

 quite reaching ( 9 ) or a trifle surpassing ( S ) the tip of the abdomen ; 

 tibiae heavy, with rather short, stout spines. Last ventral segment of 

 the male abdomen less elongate than in M. bivittata and M. alacris. 



General color light grayish-brown, heavily lined and marked with 

 dark brown, and testaceous. A broad brownish band, commencing at 

 the tip of the vertex and extending backwards along the middle of the 

 occiput and pronotum to the middle of the dorsal edge of the closed 

 tegmina; another reaching from the eyes backwards along the upper 

 half of the sides of the pronotum upon the tegmina, the entire sides of 

 which (save a narrow costal line of testaceous) it covers. These lines 

 are darkest on the pronotum, where the color is nearly black. There is 

 also a continuation of this color on the upper portion of the frontal costa 

 and also a narrow line down the inner edges of the lateral facial carina), 



