NO. 2264. BEES IN THE NATIONAL MUSEUM. 3—COCKERELL. 213 



Megachile ditnidiata velutina Smith. 

 MegacMle dimidlata ahhottlana Cockerell. 

 Megachile dimidlata erythropoda Cameron. 



MEGACHILE BENTONI, new species. 



Female. — Length a little over 11 mm. ; black, not very broad, with 

 mainly ochreous pubescence; clypeus very densely rugosopunctate, 

 without any keel or smooth line, its lower margin irregularly den- 

 ticulate; a shining area just above top of clypeus; mandibles with 

 the long cutting edge very oblique, the teeth feeble, except the sharp 

 apical one ; face with pale brownish hair, fuscous on middle of clypeus, 

 dense and almost white at sides; front and vertex with long black 

 or dark fuscous hair; cheeks and occiput with whitish hair; meso- 

 thorax and scutellum very densely punctured; dorsum of thorax 

 with ochreous hair, but black on disk of mesothorax; at sides of 

 thorax the hair is pale ochreous, becoming dull white beneath; 

 tegulae bright ferruginous; wings dusky hyaline; legs black, the 

 hair pale, on inner side of tarsi bright red; hind basitarsi parallel- 

 sided, not especially broad; abdomen glistening, the first two seg- 

 ments with ochreous pubescence, the others with black, but segments 

 2 to 5 with conspicuous entire reddish-ochreous hair-bands; ventral 

 scopa pale reddish, black only at apex of last segment. 



Menserah, Northwest Provinces, India, March 190G (Frank Ben- 

 ton). Among the Indian species perhaps nearest to M. fidvofasclata 

 Radoszkowski, from wliich it is readily known by the four entire 

 abdominal bands. Bingham places fulvofasciata as a doubtful syno- 

 nym of M. amputata Smith, but the description indicates a quite dif- 

 ferent species, only 10 mm. long. M. tentoni has a strong superficial 

 resemblance to the European M. argentata. 



Type.—Q^t No. 21692, U.S.N.Ikl. 



MEGACHILE ARCUATA, new species. 



Female. — Length about 13.5 mm. ; black, rather robust, resembling 

 a Lithurgus; head large, face and cheeks very broad ; mandibles elon- 

 gate, tridentate, with a tubercle on inner border; maxillary palpi 

 with long dark hair; clypeus broad, concave, smooth, presenting a 

 shining basin bounded on each side by a large oblique keel; supra- 

 clypeal area also presenting a smooth basin, bounded above and at 

 sides by an arcuate raised margin; antennae black; cheeks with 

 strong punctures running together in rows; sides of face, sides of 

 metathorax, tuft behind wings, fringe on tubercles, and ventral 

 surface of thorax with white hair, but the head and thorax other- 

 wise with sparse black hair; mesothorax and scutellum denselj'^ and 

 coarsely rugosopunctate; tegulae black, finely punctured; wings 

 hyaline, the apical margin broadly duslry, marginal cell very obtuse 

 at end; legs with thin white hair, dense and shining on middle 



