SMULYAN: NEW ENGLAND TENTHREDELLA. 443 
Tenthredella basilaris (Provancher) . 
Tenthredo basilaris Provancher, Nat. Can., vol. 10, 1878, p. 196, n. 3, 9 . 
Tenthredo basilaris Provancher, Faun. Ent. Can., vol. 2, 1883, p. 222, n. 3, 9 . 
Tenthredo basilaris MacGiUivray, Can. Ent., vol. 27, 1895, p. 79, 9 . 
The type is in the Provancher Collection, IMuseum of Public 
Instruction, Quebec, Pro\ince of Quebec, Canada. 
Type locality, ? Province of Quebec, Canada. 
Female. — Head. — Black; the following parts yellow, or pale 
yellow: clypeus, labrum, mandibles, lower portion of cheek or 
spot on same, lower orbit usually, a small spot sometimes on 
hyperclypeus, the anteriormost portion of the supra-antennal 
ridges often (sometimes rufescent), and a minute elongate spot 
at the summit of the inner orbit; the two basal segments of the 
antennae dull ferruginous (the second one usually black in part) . 
Head behind eyes from fully as wide to distinctly narrower than 
through them; supra-antennal ridges generally fairly prominent. 
Thorax. — Black; the following parts yellowish, or yellowish 
white: the posterior dorsal margin of lobes of collar, tegulae 
(sometimes brown), and a large spot on the meta-episternum. 
Mesoscutellum from slightly to moderately convex; meso-epister- 
num moderately sharply pointed. 
Abdomen.- — Dark dull ferruginous; basal tergum black, the 
second often dusky; sides of first tergum yellowish, or j-ellowish 
white. 
Legs. — Ferruginous, usually paler toward the extremities; 
the following parts black : coxae except the anterior beneath to a 
variable extent, trochanters above and the posterior sometimes 
entirely, femora slightly at base above and approximately the 
apical half of the posterior except beneath usually (above rarely 
continued to base), a small spot at the base and the apical 
portion of the posterior tibiae ; the following parts dull white, or 
yellowish: the anterior coxae beneath to a variable extent, the 
trochanters beneath as a rule, cjuite often the anterior femora 
before faintly, the anterior tibiae before, and xoyx often the 
anterior tarsi before. 
Wings. — Fore wings pale honey-yelloAv, sometimes rather 
faint, and often more heavily on apical half; costal cell fairly 
