52 NEW NORTH AMERICAN ACRIDID.E BRUNER. 



tigium to the front edge of the pronotum, a similar one extending from 

 the lower edge of each eye down the face to the corner of the elypeus ; 

 in some specimens this line is separated into two by the very nar- 

 row yellow front border of the cheeks; there is a third line or baud of 

 the same color directed backwards from the middle of the eyes, widen- 

 ing as it goes, and continued upou the sides of the pronotum, of which 

 it covers a little more than the upper half. This last baud is partially 

 interrupted on the front edge of the pronotum by a pointed streak of 

 yellow which reaches nearly to the, lateral carina?. Disk ferruginous, 

 with two lateral triangular brown spots on the posterior lobe, that ap- 

 pear as if separated from the coloring of the sides by the narrow yel- 

 low lines along the carinas. Tegmina with the disk brown to the apex, 

 the anterior edge of which is much the darkest and deeply crenulate or 

 waved, remainder grayish, becoming somewhat transparent apically. 

 Wings pellucid, with the veins and nerves of the apical third infuscated. 

 The posterior femora, with the upper carina and the upper half of the 

 outer face brown, also with indications of two dusky bands on the 

 upper edge. Posterior tibia? dirty grayish -yellow, becoming infuscated 

 apically. Venter dull yellow. Antennae testaceous, in some specimens 

 inclining to lavender. 



Length of body, $ , 13 u,m , 9 , 18.5 nuB ; of antennae, S , 9 mm , 5 , 7"""; 

 of pronotum, S, 2 mm , 9, 2.92"""; of tegmina, 5,9""", 9 , 12.5" 1 "' ; of 

 hind femora, 5,8.6""", 2, 11"""; of hind tibia', £ , 7.05""", 9 10""". 



Hab. — Sliver City, N. Mex. (Chas. II. Marsh); Yellowstoue Valley, 

 Mont., Helena and Fort Bentou, Mont., and from several points in 

 northern Wyoming, southwest Dakota, northwest Nebraska (Brunei). 



This trim little locust is quite common throughout the regions above 

 indicated, where it is to be met with among the short bunch grasses of 

 the plains; and especially is it partial to localities where the surface is 

 somewhat strewn with gravel and small stones. 



Ochrilidia (?) cinerea sp. uov. 



Somewhat larger than 0. erenulata and 0. occipitalis. Dull, dirty, 

 grayish-yellow, with the tegmina evenly mottled throughout. 



Differing from the species just described in the somewhat longer, more 

 acute vertex, which expands a little in advance of the eyes and is quite 

 deeply hollowed; also in the presence of rather plain, elongate, trian- 

 gular lateral foveohe. Pronotum as in occipitalis. Tegmiua with the 

 discal cells closed at about two-thirds the distance to the apex, and the 

 marginal field somewhat expanding on the basal half. Anteume a little 

 heavier and more flattened than in occipitalis. Posterior femora as in 

 that species to which it is most closely related. 



General color 'cinereo-testaceous, with faint indications of the brown 

 markings of the head and thorax, as seen in the other two species. 

 Tegmina evenly mottled throughout, with small fuscous quadrate spots. 

 Posterior femora crossed by two faint, dusky, oblique bands, plainest 



