19071 
LOVELL AXD COCKERELL — MEGACHILIDAE 
17 
men. The globose abilonieii separates it at a glance from (). 6hjrcta (’r. (). rflobo.ta 
is easily known from all the Maine species by the entirely black color of the tcgnmcnts. 
<)SMIA (LeUCOSMIA) ALIilVENTRIS ('r. 
1S(')4 Osmia ulbivenirix Cr. $ c?, Proc. Ent. Soc. Phil. 15:31. 
One female specimen taken on Rnbus strigosns, June 16, I'.tO.j. 'I'he male 
was found on the flowers of the blackberry, June 15. 
Os.MIA I.N’WI'EKCENS n. S[). 
$ . — Length S mm., rather stout with globose abdomen. Hluish-green, the 
head wider than the di.stance between the wings, densely and finely punctured, 
clothed with white [mbescence; lower ]>art of the clypeus produced, black, covered 
with very dark Ijrown ])ubeseence; from beneath the edge project two tufts of short 
stiff red hairs; mandibles deeply punctured, black, tridentate; antennae nearly 
black. Mesothorax densely and finely punctured, more sparsely in the middle; 
clothed with long hoary pubescence except ujion the dorsum, which is nearlv bare; 
there are no black hairs on vertex or thorax. Wings subhyaline or tinged with 
dusky, a dark shade in the marginal cell, nervures dark, basal nervure before tran.s- 
verse medial, tcgulae rufo-piceous. Legs normal, black, with light hair, fuscous 
on inner side of tarsi, and at apex of middle tibiae beneath. .Mxlomen subglobose, 
greenish-blue, with a bright steely lustre, minutely ]nmctured, 1st segment clothed 
with white pubescence at base, apical .segment with fine white tomentum; ventral 
scopa dense, silvery-white, black at apex. 
One specimen, taken on Vaccinium macrocarpon probably in July. Easily 
known from 0. albivenlri,<i by the larger size, and dark hair at apex of clypeus, and 
at apex of abdomen beneath. In the venation it resembles 0. canailcmti.i, but the 
clypeus is not at all as in that species. 
Os.MIA (Cextuos.mia) kucephai.a (’r. 
1864 O.imla bucephala Cr. $ , Proc. Ent. Soc. Phil. 3: 17. 
1864 Osmia latilarsus (’r. (J', Proc. Ent. Soc. Phil. 3:20. 
1895 Osmia bucephala Robt. J'rans. Am. Ent. Soc. 22: 125. 
One male taken May 11, 1905, on the inflore.scence of .\cer saccharinum. 
remarkable s]>ecies, easily known in the male l)v the very large hind sjuirs and 
peculiar middle tarsi. 
Heriades. 
Heriades carinatus Cr. 
1864 Heriades carinatus Cr. $ cJ*, Proc. Ent. Soc. Phil. 2: 383. 
Three males; two taken July 28th, the third on the flowers of Kalmia angusti- 
folia which blooms here in July. 
