170 HYMENdPTERA. 



the anterior tarsi very pale testaceous, the three basal joints 

 broadly dilated, and having behind a ])alc tliick fringe, which is 

 fulvous beueatli ; the intermediate tarsi are also covered above 

 with h)ng white pubescence ; the joints of the posterior tarsi are 

 very pale testaceous, and fuscous at their apex ; the claws ferru- 

 ginous, their tips black ; wings subfuscous, palest towards their 

 base ; the metathorax and first segment of the abdomen covered 

 with white pubescence, on the other segments it is short and 

 black ; the apex obtuse ; the apical margin of the sixth segment 

 emarginate. 

 Hab. New Holland. (Coll. J. S. Baly, Esq.) 



78. Megachile obtusa, n. s. 



Male. Length 3:,: lines. — Black, the head large, wider than 

 the thorax ; the face covered with bright yellow pubescence ; the 

 antenna; rufo-testaceous beneath ; the cheeks, legs and thorax 

 beneath covered with long white pubescence ; on the disk and 

 on the sides of the metathorax it is pale yellow ; wings hyaline 

 and iridescent, faintly clouded at their apical margins, the ner- 

 vures black ; the anterior tarsi pale yellow testaceous, the basal 

 joint slightly dilated, and of the same width throughout; the 

 posterior margin thinly fringed with white pubescence, as are 

 also the intermediate tarsi behind ; all the tarsi beneath have a 

 bright yellow pubescence, the calcaria pale testaceous ; claws 

 rufo-testaceous, black at their tips. Abdomen short, all the seg- 

 ments have a pale marginal fringe ; the apical segment covered 

 with bright yellow pubescence, its apex bidentate ; the lateral 

 angles acute. 

 Hab. Western Austraha. (Coll. W. "W. Saunders, Esq.) 



79. Megachile clypeata, n. s. 



Female. Length 3 lines. — Black, closely and strongly punc- 

 tured, head subquadrate, on each side of the face a little griseous 

 pubescence, the anterior margin of the clypeus has on each side 

 a broad flattened tooth. Thorax, a little griseous pubescence on 

 the sides ; the wings hyaline and iridescent, the claws rufo-tes- 

 taceous. Abdomen, the basal margins of the segments depressed, 

 the apical margins on each side have a narrow white fringe, the 

 apical segment feiTuginous ; beneath, the pollen-brush white. 

 Hab. Western Australia. (Coll. W. W. Saunders, Esq.) 



80. Megachile maculata, n. s. B.M- 



Female. Length 5 lines. — Black, the face thickly covered 

 with very pale ochraceous pubescence, nearly white at the mar- 



