18 
PSYCHE 
[February 
Ai,rn>AMEA. 
Alcidamea simplex Cr. 
1864 Ileriadcs simplex Cr. $ , Proc. Ent. Soc. Phil. 2: 3*84. 
1864 Alridamca prodiictn Cr. c?, Proc. huit. Soc. Pliil. 2: 386. 
1903 Alcidamea pnxlucta Robt. 9 (?, Tran.s. Ain. Pint. Soc. 29: 171. 
One female on Epilobinm angastifoliiiin, July 30th; two females on cultivated 
blackberry, June 15th; two males collected on lilackberry, June 24th and 25th. 
IMegachile. 
Meg.vchile melaxophaea Sni. 
1853 Mcgachile melanophaea Sm. 9 C?, Cat. Uym. Brit. Mus. 1: 191. 
The female visits Epilobinm angustifolium from July 19th to 30th, and has 
also been collected on Vicia Cracca and Apocymum androsaemifolium. The male 
has been taken on Rubus strigosus, June 16th, and Vicia Cracca about July 20th. 
It is related to the western M . wooioni CklL, and to the Piuropean J7. circumeinria 
Kirby. Ph-iese puts cirrumriucia in Megarhilr, s. str. ; Titu.s refers melanophaea 
to Xanthosarus, where it .seems rather out of place. 
Megachile (Xanthosarus) l.vitmanus Say. 
1823 Megachile lafimanus Say, (S', West. Quart. Rep. Cin. 2:81. 
1853 Megachilc acuta Sm. 9 , Cat. Plyin. Brit. Mus. 1: 192. 
The male has not been taken in this locality. The female which is rather com- 
mon, has been found from July 30th on Carduus odoratus to Sept. 7th on Solidago; 
also on Innla Nelenium and Aralia hispida. 
Meg.vchile (X.vnthosarus) vidua Sm. 
1853 Mcgarhile vidua Sm. 9 , Cat. Ilym. Brit. Mus. 1 : 192. 
1853 Megachile frigida Sm. c?. Cat. Ilym. Brit. INlus. 1 : 193. 
The female was collected on Carduus odoratus, July 30th; also on Pipilobium 
angustifolium. 
IMegachile albula n. sp. 
(S '. — Iwngth 10-12 mm. Black, abdomen parallel-sided, head and thorax 
densely and finely punctured; face, clypeus, clieeks below, mesothorax, jileiirae 
and sides of metathorax clothed with long white pubescence, some fu.scoiis on vertex, 
and on each side of middle of mesothorax, separating the lateral white hair from the 
central bare space. Head broad, clypeus deejily emarginate, mandibles black, 
4-dentate varying to 3-dentate, (the third tooth absent), with a large basal tooth 
