438 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
tion of this species: Maine, New Hampshire and Massachusetts 
(Cresson); New Jersey (Ashmcad); Quebec (?) (Provancher), and 
Ottawa, Ontario (Harrington), Canada. How trustworthy these 
records are I am unable to say, for, judging from determined mate- 
rial which I have seen, there seems to be a misunderstanding on 
the part of some as to what this species is. 
Tenthredella formosa (Norton). 
Tenthredo fonnosus Norton, Proc. Ent. Soc. Philu., vol. 3, 1864, p. 14, n. 28, 9 cT. 
Tenthredo formostis Norton, Trans. Amer. Ent. 8oc., vol. 2, 1868-9, p. 231, 
n. 10, ? &. 
Tenthredo formosa MacGillivray, Bull. Conn. Geol. and Nat. Hist. Surv., no. 
22, 1916, 1). 86-87. 
The female type, number 201, from Massachusetts is in the 
collection of the American Entomological Society, Philadelphia, 
Pennsylvania, and was examined. The male type from Maine 
is lost. 
Female. — Head. — Black, shining; the following parts yel- 
low: clypeus, labrum, mandibles, lower two-thirds of cheeks and 
lower orbit, front below antennae, anteriormost portion of the 
supra-antennal ridges, a rather broad line (the inner margin some- 
what lobed) extending along the inner orbit from about the 
middle of the eye to nearly the posterior margin of the head; 
antennae beyond third segment rufcscent except above. Head 
behind eyes slightly narrower than through them ; supra-antennal 
ridges quite prominent. 
Thorax. — Black; the following parts yellow: prosternum, 
ventral face of propleura and the lower portion of the lateral face, 
the lower portion of the lateral face of the pronotum, posterior 
dorsal margin of lobes of collar, tegulae, a minute spot on the 
prescutum on each side opposite the bases of tegulae, a spot at 
the posterior end of the mesoscutum immediately in front of each 
anterior angle of the mesoscutellum, the mesoscutcllum on each 
side almost its whole length (broadly), post-tergite except a nar- 
row median longitudinal area, posterior portion of the upper mar- 
gin of the meso-epimeron, an obtuse-angled band on the meso- 
episternum (broader anteriorly), very small posterior mesal 
portion of pectus, a small spot on the metascutum beneath each 
cenchrus, a small spot on the metascutellum on each side, the 
