HYMENOPTERA. 171 



gins of the eyes ; the flagellum rufo-testaceous beneath ; the 

 cheeks, thorax beneath and the legs covered with glittering white 

 pubescence ; the vertex and disk of the thorax thinly covered 

 with ochraceous pubescence, intermixed with a few black hairs ; 

 a small tuft of white pubescence beneath the tegulse, an ochra- 

 ceous one above it, and two others touching the anterior margin 

 of the scutellum ; a line of pale pubescence along its inferior 

 margin ; the metathorax thinly covered with long white bail's ; 

 the wings hyaline, very faintly clouded at their apical margins. 

 Abdomen broad at the base and acute at the apex ; the margins 

 of the segments having a narrow band of ochraceous pubescence ; 

 beneath, the pollen-brush is of a pale glittering brightness. 



Male. Length 4^ lines. — This sex resembles the female in 

 having the thorax similarly spotted with tufts of pale pubescence ; 

 that on the face is golden-yellow ; the anterior femora and tibiae 

 in front and beneath and the intermediate tibiae in fiout rufo- 

 testaceous ; the anterior tarsi very pale testaceous, nearly white, 

 and having on their anterior margin a narrow fringe of ferrugi- 

 nous pubescence and a white fringe on the posterior one, the 

 outer edge being narrowly fulvous ; the intermediate tarsi have 

 a long fringe of white hair ; all the claws ferruginous, their tips 

 black. The two apical segments of the abdomen covered with a 

 short bright yellow pubescence intermixed with long black hairs ; 

 the apical segment bidentate ; beneath, the segments have nar- 

 row white marginal fasciae. 

 Hub. Western Australia. 



81. MeGACHILE CANIFRONS, n. s. B.M. 



Male. Length 3^ lines. — Black, the face clothed with long 

 white pubescence, that on the clypeus silverj^ ; the cheeks, sides 

 of the thorax, the basal segment of the abdomen and sides of the 

 second covered with white pubescence ; the femora have a long 

 fringe, and the tibiae and tarsi a thin clothing of the same colour ; 

 the tarsi beneath pale fulvous ; the claws testaceous, their tips 

 black ; the wings hyaline, iridescent, and faintly clouded at their 

 apical margins, nervures black. Abdomen short, rather narrowed 

 at the base, the apical margins of the first and second segments 

 have laterally a short fringe of snow-white pubescence ; the three 

 apical segments curving downwards ; the fifth segment has a 

 large patch of bright fulvous pubescence ; the margin of the 

 sixth segment entire. 

 Hab. Western Austraha. 



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