428 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
DD. Antennae long, flattened, of male twice, of female one and one- 
half times as long as head and pronotum together. Wings 
abortive (rarely functional and then lacking opaque spot on 
front margin) .... Sprinkled Locust, Chloealtis conspersa, p. 438. 
BB. Tegmina with well-developed, elevated intercalary vein. 
G. Lateral carinae of pronotum distinctly divergent behind. Prozone 
shorter than metazone. Anterior distal intercalary venules (espe- 
cially in male) oblique. Sternum 9 of male not black on mid-line. 
H. A conspicuous pale streak at base of tegmina near front margin. 
Intercalary vein of male with low, dull teeth. 
Striped Sedge-locust, Mecostethus lineatus, p. 442. 
HH. Tegmina without pale stripe as above. Intercalary vein of 
male with high, acute teeth 
Northern Sedge-locust, Mecostethus gracilis, p. 444. 
GG. Lateral carinae of pronotum sub-parallel. Prozone and metazone 
of equal length. Tegmina without pale stripe. Anterior distal 
intercalary venules nearly transverse. Sternum 9 of male with 
black spot on median line. 
Broad-winged Sedge-locust, Mecostethus platypterus, p. 446. 
Bunch-grass Locust. 
Pseudopomala brachyptera (Scudder). 
Plate 12, fig. 1; Plate 20, fig. 1-3. 
Opomala brachyptera Scudder, Boston Journ. Nat. Hist., vol. 7, p. 454 
(1862).— Fernald, Orth. N. E., p. 34 (1888). 
Pseudopomala brachyptera Morse, Psyche, vol. 7, p. 343 (1896). — Walden, 
Bull. Geol. Nat. Hist. Surv. Ct., no. 16, p. 73 (1911). 
A medium-sized, slenderly built Locust with very strongly 
retreating face. Vertex elongate, projecting in front of eyes 
nearly their length, bluntly rounded, once and a half or twice as 
wide as an eye; foveolae absent; median carina prominent, dis- 
appearing posteriorly between the eyes into the convex crown. 
In side view the face is plane or slightly concave, protuberant 
opposite base of antennae, and rounded subangulate at union 
with vertex. Antennae once and a half (cf ) or but little (9 ) 
longer than head and pronotum together, enlarged at base, 
prismatic, tapering to a point. Disk of pronotum nearly flat, 
front and hind margins truncate, sides parallel, carinae equally 
developed, distinct but not prominent, metazone two-thirds 
as long as prozone, the lateral lobes much longer than deep, 
with anterior margin strongly oblique, hind margin concave. 
