April, 1902.] North American Species of Athysanus. 
2 35 
extending beyond the pygofers the length of the ultimate segment ; male 
valve equilaterally triangular ; plates very narrow, long, acutely triangular, 
about three times the length of the valve, their apices divergent, clothed 
with stout hairs. 
Habitat: Abundant everywhere from Md., Ohio, la., Colo, 
and Ariz. south to the West Indies and Mexico. The most abund- 
ant species of the genus throughout the southern states. 
ATHYSANUS STRIOLUS, FALLEN. 
Cicada s/iio/a Fall. Acta, Holm, XXVII p. 31. [S06. 
Athysanus sti tola Van. I). Can. Ent. XXI p. 11, 1889 ; Catalog p. 303 I Limotettix.) 
Athysanus sti iota Osh. and Ball, Das’. Acad. X. S. VII, p. 91 ; pi. V fig. 4, 1898. 
Long and narrow, tapering posteriori}’, resembling in form the genus Idio- 
cerus ; eyes wider than pronotum. Variable in size, usually smaller than 
pctrallelus which it closely resembles. Greenish with transverse black stripes 
on vertex and face Length 9 4-5111111, $ 3.5-4111111 ; width 1.25mm. 
Vertex slightly longer on middle than against eye, twice wider than long, 
over half the length of the pronotum, rounding to the broad front ; profile a 
trifle angled before the ocelli, other structures as in pctrallelus. 
Color: pale green, vertex with a transverse black stripe as in parallelus 
but narrower, leaving a broader green stripe both behind and in front and 
strictly transverse, not parallel with margins. Face with the black sutures, 
arcs and the cordate upper margin of front, as in parallelus , very variable in 
breadth and intensity. Pronotum and elytra pale green. 
Genitalia : female segment half longer than the penultimate, the entire 
posterior margin shallowly, roundingly, emarginate ; pygofers rather long, 
equaling the black ovipositor. Male valve broad, obtusely angular, plates 
about three times as long as the valve, triangular, their apices slightly 
divergent, much narrower than parallelus. 
Habitat: (Europe) Ontario, N. Y., 111., Iowa, Colo, and Van- 
couver’s Isd. Doubtless will be found throughout the northern 
half of the United States and well up into Canada. 
ATHYSANUS PARALLELUS VAN DUZEE. 
Athysanus parallelus Van D Can. Ent. XXIII, p. 169; Cat. p. 303 {Limotettix .) 
Closely resembling striolus but larger and with a broader, shorter head. 
Pale green with a transverse band on vertex, facial sutures and arcs on front, 
black. Length, 6mm; width, 1.75mm. 
Head with eyes wider than the pronotum ; vertex strictly parallel-mar- 
gined, two and one-half times wider than long, a trifle over half the length 
of the pronotum, roundingly confused with the almost flat face ; front broader 
than long, much broader than the clypeus at apex. Elytra long and narrow 
with a distinct appendix ; venation typical Athysanoid pattern, apical cells 
long, curved. 
Color : vertex pale yellow or greenish, a transverse black band just back 
of the ocelli, nearly as wide as the space behind it ; face with the sutures, a 
line on the clypeus and the arcs on the front, black. The upper margin of 
