454 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
above; brown beneath. Tegmina usually more or less sprinkled 
with fuscous dots, sometimes noticeably pale along dorsal margin. 
Disk of wings deep yellow, bounded by a blackish cross-band 
which is sometimes as wide as, but usually narrower than a teg- 
men, and which sends off a subfrontal shoot two-thirds the dis- 
tance to the base; apex transparent, more or less clouded. Hind 
femora nearlj^ uniform brown, faintly fasciate externally, strongly 
fasciate internally. Hind tibiae dusky brown, blackish, or green- 
ish black, annulate with pale near base, and in female pale on 
distal third. 
Measurements. 
Total Body Tegmina Hind femora Antenna 
Male 23-26.5 17-19 17.5-20 11 -12.5 6-7.5 
Female 28-30 26-28 20.5-23 13 .5-15.2 6-3.5 mm. 
The two species of Arphia inhabiting New England were 
apparently confused by Harris, and sometimes are today by 
others, but due attention paid to the characters stated in the Key 
should enable anyone to distinguish between them readily. 
The great majority of Orthoptera hatch from the egg in spring 
or early summer, feed upon the tender vegetation everywhere 
available at that time, grow rapidly, molt several times, attain 
maturity, lay their eggs and perish, running the whole gamut of 
their active existence in a single summer season. To this rule 
there are among the Band-winged Locusts three conspicuous 
exceptions: the Spring Yellow- winged Locust, the Coral-winged 
Locust, and the Green-striped Locust. These three hatch in 
midsummer from eggs laid the same season, become about half- 
grown by the time cold weather sets in, hibernate as nymphs 
among the vegetable debris of the fields, and mature in the spring, 
— in late April or early May. 
The Spring Yellow-wing is very common and widely distrib- 
uted, occurring nearly everywhere in dry pastures in spring and 
early summer, its rattling stridulation being one of the constant 
features of a ramble in such places at that season. Its flight, 
particularly that of the male, is less extended than that of 
A. xanthoptera, being often limited to a few feet, but sometimes 
continued for three or four rods; its course is frequently circling, 
with an abrupt curve and a sudden drop into the grass and bushes 
at the end. "The male, when disturbed, moves in short, jerky 
