MORSE: ORTHOPTERA OF NEW ENGLAND. 443 
Mecostethus lineatus Morse, Psyche, vol. 7, p. 443 (1896). — ^Walden, Bull. 
Geol. Nat. Hist. Surv. Ct., no. 16, p. 85 (1911). , 
Vertex with lateral margins decidedly elevated and mid-carina 
distinct. Lateral foveolae of male short, triangular, of female 
shallow and nearly obsolete. Pronotum with hind margin 
decidedly angulate or convex, the lateral carinae low and dull 
and cut by two sulci. Surface of pronotum punctate. Sub- 
genital plate of male elongate-conical, two and one-half times as 
long as deep, its ventral outline concave. Ovipositor valves 
rather slender and smooth, tips not extremely sharp. 
Color: male, dark brown above, the sides of the head and 
body, especially in front, varying from yellowish green to greenish 
yellow; beneath, bright yellow. Basal half or two-thirds of hind 
femora cherry red beneath; this is succeeded by bands of fuscous 
or dark brown and yellow, with the knees black. Hind tibiae 
for the most part straw yellow, black at tip and base, and usually 
more or less ringed or clouded with fuscous near base. Tegmina 
dark brown, sometimes purplish brown, a conspicuous white 
streak on basal half of costal area, fading out distally. This is 
sometimes continued forward as a narrow line along the lateral 
carinae, broadening on head as a pale area behind eye. Female 
usually much darker than the male, sometimes with much 
Indian red, claret brown, or even maroon on the sides of the head 
and body. An irregular pale area sometimes extends from the 
prozone downward and forward on the cheeks. The tegmina are 
nearly transparent except at the base, the veins and venules dark 
brown; wings transparent, yellowish on hinder half, faintly 
washed with brown on apex and at distal third of costal margin. 
Measurements. 
Total 
Body 
Tegmina Tegmina, average 
Length Width 
Hind femora Antenna 
Male 
28-32 
23-27 
21-26.5 23.5 4.6 
14.5-18 11-12 
Female 
35-41.5 
34-38 
26-31.5 29.5 5.5 
18 -21 10-11.5 mm. 
Besides the characters already stated, this species differs from 
our other two in having longer and narrower tegmina whose 
dorsal portion is not so evidently angulate with the lateral at the 
junction and does not differ from it markedly in tint. 
This elegantly formed, brilliantly colored Locust is our best 
known species of the genus and is very widely distributed, prob- 
