SMULYAN: NEW ENGLAND TENTHREDELLA. 449 
stigma from light brown to nearly black, as a rule paler at base; 
costal cell moderately to strongly translucent; veins blackish or 
black, rarely brown. Hind wings hyaline, or with the apical 
half faintly clouded, rarely entirely faintly clouded; veins black- 
ish, or brown. 
Length. — 9.5-11 mm. 
Redescribed from eight females and ten males including types. 
This species is apparently a very variable one (see Constancy of 
Characters). The specimens I have examined, however, formed 
practically a complete series. 
Tenthredella remota (MacGillivray) differs from the tj'pical con- 
dition principally in having the posterior femora almost entirely 
black. I cannot readily separate slossonii of the same author from 
the series of males that I have examined. 
Habitat. — Amherst and Chester, Massachusetts (August) ; 
Durham, Franconia, Bretton Woods, "Twin Mountain" and i\It. 
Washington, New Hampshire (June and July) ; Hallowell, Orono 
and Waldoboro, Maine (July and August); Darien, Connecticut 
(June); Ithaca, New York; New Jersey (Ashmead); Labrador, 
and Quebec (?) (Provanchcr), Canada. 
Tenthredella semirubra (Norton). 
Tenthredo semirubra Norton, Proc. Ent. Soc. Phila., vol. 3, 1864, p. 14, n. 29, 9 . 
Tenthredo semirubra Norton, Trans. Amer. Ent. Soc, vol. 2, 1868-9, p. 236, 
n. 24, 9 &. 
? Tenthredo semirubra Provanchcr, Nat. Can., vol. 13, 1882, p. 299, n. 25, 9 . 
? Tenthredo semirubra Provanchcr, Faun. Ent. Can., vol. 2, 1883, p. 748, n. 
25, 9. 
f Tenthredo barnstonii MacGillivray, Can. Ent., vol. 27, 1895, p. 81, cT. 
Tenthredo semirubra Rohwer, Can. Ent., vol. 41, 1909, p. 148, cf . 
The types are lost. Type locality of female, "Massachusetts " ; 
that of male not given. 
The type of harnstoni W. F. Kirby is in the British Museum; 
I have not seen it. 
Female. — Head. — ^ Black; the following parts yellow to 
cream-white; clypeus (sometimes only lower two-thirds), labrum, 
mandibles, and a minute elongate spot at the summit of the inner 
orbit (very often discolored) ; antennae usually rufoscent to a 
variable extent beyond the third segment. Head behiiul eyes 
