454 Mr. T. D. A. Cockerell on 



and Friese believes that M. fossoris is the true female of 

 M. curvipes, 



Megachile pulchriventris, sp. n. 



$ . — Length about 8 mm., anterior wing Q'7 mm. 

 Short and broad, black, including the legs, mandibles, 

 and antennse, but tegulse briglit ferruginous, blackened in 

 front ; mandibles quadridentate ; clypeus closely punctured 

 laterally, but the convex disc highly polished and sparsely 

 punctured, the lower margin very broadly angularly emargi- 

 nate ; cheeks narrow^ sharply keeled behind, with long white 

 hair below ; sides of face with spreading fulvous hair, but a 

 patch of black hair immediately laterad of each antenna ; 

 front with appressed pale fulvous hair ; mesothorax minutely 

 punctured, covered with appressed fulvous hair, conspicuous 

 when viewed from certain angles ; scutellum abbreviated, 

 truncate posteriorly, anteriorly with fulvous hair ; base of 

 metathorax depressed in middle ; mesopleura shining, dis- 

 tinctly and rather coarsely punctured. Wings dusky, deep 

 fuliginous in the marginal cell and apically ; first recurrent 

 nervure joining second submarginal cell at a distance from 

 base greater than half length of first intercubitus ; hair on 

 outer side of anterior and middle tarsi shining silvery, on 

 middle tarsi with a patch of purplish brown ; hind spurs 

 brown ; hind basitarsi broad and almost as long as the tibiie, 

 with red hair on inner side. Abdomen very broad, the seg- 

 ments with fringes of fulvous hair, most conspicuous on 

 segments 4 and 5, but these are not entirely covered with 

 such hair ; apical segment with appressed fulvous tomentum; 

 ventral scopa shining golden, not at all black at apex, but 

 toward the base is a very large triangular area of woolly- 

 looking white hair, very different from the rest of the scopa; 

 the thorax beneath and bases of legs are also densely clothed 

 with this woolly white hair. 



2 ? , Issororo, N.W.D., xii. 1918 (G. E. Bodkin). 



Marked '^Not in B.M.'^ An elegant little species, running 

 in Schrottky's table to M. beroni, Schrott., which it does 

 not resemble, and going nowhere in Friese^s table. It is 

 actually close to M. xanthura^ Spinola, difi'ering by the 

 abdominal segments 4 and 5 not entirely yellow-haired, the 

 yellow scopa, and the dark marginal cell and apex of wing. 

 In the colour of the wings it resembles M. bertonii^ 

 Schrott., in the pubescence of thorax and character of 

 the ventral scopa it is like M. awantipeimis, Ckll., from 

 Guatemala. 



