1916] Parshley — On Some Tingidce from New England 165 



area is biseriate at middle; and the bucculae are evenly rounded 

 posteriorly, in tricornis somewhat angulate. As all these charac- 

 ters are somewhat variable, the form may be considered a variety 

 rather than a distinct species. My thanks are due to Mr. O. 

 Heidemann, for his kindness in examining a specimen and point- 

 ing out some of the distinctive characters of the form. As the 

 genus is new to the American fauna, I have included generic 

 and specific characters in the description. 



Physatocheila plexa Say, not Osb. & Drk. 



Long-winged form. — Uniform dull yellowish brown, eyes and 

 fourth segment of antennae darker. Head with five adpressed 

 spines arranged as follows: two anterior close together and con- 

 verging, extending forward between the first antennal segments, 

 one median arising behind and extending forward between the an- 

 terior spines, and two lateral, arising beneath the margin of the 

 pronotum and extending forward close to the eyes beyond the 

 base of the median spine; anteocular processes stout, incurved; 

 first antennal segment a little longer than the second, both of 

 these but slightly longer than broad, fourth fusiform, nearly as 

 long as the first and second together, third somewhat longer 

 than the front tibiae, more slender than the others; rostrum 

 moderate and slightly variable in length, extending more or less 

 beyond the middle coxae, but not beyond the posterior. Disc of 

 pronotum strongly convex, with three low uniseriate carinse and 

 broad lateral expansions as in the related species; hood a little 

 lower than in brevirostris but higher than in variegata. Costal 

 area of hemielytra with two almost regular series of areoles; sub- 

 costal area with three rows at middle, narrowing to one posterior- 

 ly; discoidal area almost straight exteriorly, extending beyond the 

 middle of the hemielytra; hemielytra extending considerably 

 beyond the apex of the abdomen, apical areoles enlarged. 

 Bucculae large; rostral channel low, widened posteriorly, open 

 behind; tips of wings visible beyond genital segment. Narrow 

 elongate oval. Length cf 9, 3.1-3.2 mm., width 1.1 mm. 



Short- winged form. — Disc of pronotum but slightly convex; 

 hemielytra extending but little beyond apex of abdomen, the areas 

 all present but somewhat shortened; wings, if present, not visible 

 beyond genital segment. Broadly oval. Length 3 mm., width 

 1.1 mm. 



