SOME BEES IN THE MUSEUM OF HARVARD UNIVERSITY 37 
line; abdomen with brilliant purple and green colors, and bright fulvous hair forming 
bands on apical margins of segments and covering apex. Second recurrent nervure 
joining third transverso-cubital; basal nervure going a little basad of transverso-medial. 
Exceedingly close to E. dimidiata (Fabr.), but I think a valid species. 
Tetralonia honesta (Cresson) 
‘“Melissodes honesta Cress., type.”’ 
8. Flagellum all black; sides of clypeal yellow obtusely notched; labrum black; 
mandibles with no light spot; hair of cheeks copious and white, of thorax above quite 
bright fulvous; mesothorax densely punctured and dull, more sparsely and shining in 
middle; abdomen with a broadly interrupted white hair-band on second segment, and 
entire ones on the following; tarsi slender, but otherwise normal; third antennal joint 
much longer than broad. 
Melecta interrupta Cresson 
“Melecta interrupta Cress., type. Dallas.” 
é. Pubescence of abdominal bands very pale yellowish; legs dark ferruginous; 
scutellum mammiform; apex of abdomen emarginate; flagellum very thick. 
Osmia lignivora Packard 
9. “From cells in maple.” Robust, about 13 mm. long, head large; hair of vertex 
and thorax above light silky yellowish, with no black intermixed; of face below antenne 
dark chocolate; a very large transverse ridge or thickening just above apical margin of 
clypeus; mandibles with two strong apical teeth, and a long inner cutting edge, their 
outer surface with fulvous hair; vertex dark bluish, front green; legs dark ferruginous, 
the femora quite red; no metallic color on legs; hair of legs shading from fuscous to fer- 
ruginous; ventral scopa largely reddish, the hair more dark fuscous basally, more red 
apically; abdomen dark purplish, hind margins of segments more or less (very narrowly) 
rufescent. 
A very striking species, suggestive of some of the Central Asian forms. 
Osmia chalybea Smith 
“Osmia texana Cress., n. sp., 648.” 
This is a female, whereas O. texana was based exclusively on two males. Cresson 
records from Texas a single 2 O. chalybea, collected by Belfrage; I suppose this to be 
the specimen examined by me, since that certainly appears to be chalybea. Its principal 
characters are as follows: 
Bright steel blue, of fair size, with white pubescence, which forms narrow fine bands 
on lateral hind margins of first three abdominal segments. Scopa black, but hair on lateral 
margins of abdomen white. Vertex broad, with strong large punctures. Wings quite 
dusky. Legs not at all metallic, hair of tarsi mainly fulvous. Mandibles broad, with 
two sharp apical teeth, and a rudimentary third one; outer side, parallel with the cutting 
edge, with a band of conspicuous fulvous hair. Middle of apical margin of clypeus with 
a pair of strong nodules, and between them a little keel. 
Osmia subfasciata Cresson 
“Osmia subfasciata Cress., n. sp., 649.” 
9. This must surely be a genuine type, although it has the abdominal scopa shining 
