17- HYMENOPTERA. 



82. Megachile apicata, n. s. 



Female. Lenj.'tli 3 lines. — Black and strongly punctured, on 

 each side of the face a little white pubescence, on the anterior 

 maro;iu of the dypeus are three short teeth, mandibles coarsely 

 sculptured and loufiitutHnally jjrooved. Thorax, on the sides, 

 beneath, and also on the legs a thinly scattered griseous pubes- 

 cence; the claws ferruginous; wings hyaline and iridescent, the 

 ner\'ures dark brown ; the basal margins of the segments de- 

 pressed and having a band of white pubescence ; the sides of the 

 sixth segment broadly ferruginous ; beneath it is entirely so, the 

 pollen-brush griseous. 



Hab. Adelaide. (Coll. F. Smith.) 



S3. Megachile Heriadifor.mis, n. s. 



Female. Length 5 lines. — Black, elongate and closely punc- 

 tured ; the face has a little white pubescence on each side ; on 

 the anterior margin of the clypeus are two minute tubercles ; the 

 labrum elongate, concave towards the apex, which is roimded 

 and is produced into a sharp angle or tooth on each side ; the 

 mandibles obliquely truncate at their apex. Thorax, on the sides 

 and beneath a thinly scattered w bite pubescence ; the tarsi pale 

 fulvous beneath, the apical joints of the tarsi and the calcaria 

 ferniginous; wings subhyaline, faintly clouded at their apical 

 margins, the nervures dark ferruginous. Abdomen slightly nar- 

 rowed at the base, on each side of the three basal segments is a 

 short fascia of white pubescence, those on the two latter are 

 tinged with yellow at their inner extremities, on the marginof the 

 fourth is a nan-ow fascia, a broad one on the fifth, and the sixth 

 is covered, except at its extreme base, with pubescence of a 

 golden-yellow colour ; the pollen-brush is white. 

 Hab. Adelaide. (Coll. F. Smith.) 



84. Megachile .semi-luctuosa, n. s. B.M. 



Female. Length 7 lines. — Black, on each side of the face a 

 patch of white pubescence, the clj'peus slightly produced in the 

 middle of its anterior margin, which, near the base of the man- 

 dibles, has a short tooth, thorax above thinly clothed anteriorly 

 with black pubescence, posteriorly on the sides and beneath with 

 white ; the legs have a similar pubescence, except that on the 

 tarsi beneath, which is of a reddish-brown ; the wings subhyaline, 

 and having a fuscous cloud on their ajiical margins. Abdomen 

 elongate, the two basal segments covered with white pubescence, 

 a minute spot of the same colour on the apical margin of the 



