256 Mr. Frederick Smith on 



Gen. Megachile. 

 1. Megachile monstrosa. 



Female. Length 10 lines. Blacky with fuscous wings, 

 sub-hyaline at their base. Head : large, quadrate, as 

 wide as the thorax ; mandibles very stout, with three 

 teeth at their apex, which is obliquely truncate; the 

 clypeus elevated on each side, at the base, into a stout 

 tubercle or tooth, acute at its apex; the cheeks armed 

 with a stout acute bent tooth ; the head rugose behind 

 the eyes. Thorax rugose ; the wings dark fuscous, sub- 

 hyaline at their basal and apical margins ; beneath, the 

 sides and the metathorax clothed with griseous pubes- 

 cence ; the legs have a stout griseous pile ; the basal 

 joint of the tarsi with a short, dense, fulvous pubescence. 

 The abdomen clothed beneath with dense, pale, glitter- 

 ing fulvous pubescence ; the basal segment deeply con- 

 cave in front, and with a patch of pale pubescence on 

 each side above. 



Hab. Champion Bay. 



In the British Museum. 



2 . Megachile Jahricator. 



Female. Length 6| lines. Black, wings with their 

 apical half dark fuscou.s, basal segment of the abdomen 

 covered with white pubescence. Head and thorax 

 opaque, the abdomen slightly shining ; the face, as high 

 as the ocelli, with pale ochraceovis pubescence, that on 

 the clypeus black ; the mandibles with two stout teeth 

 at their apex, and a third, more slender and acute within. 

 Thorax : the legs with short, pale, glittei'ing pubescence, 

 that on the posterior and intermediate basal joint of the 

 tarsi black within ; the same joint of the anterior tarsi 

 has it ferruginous. Abdomen : the basal segment, the 

 basal margin of the second, and that of the third seg- 

 ment laterally, with white pubescence ; beneath, clothed 

 with bright white pubescence, that on the apical segment 

 black, with a few white hairs in the middle. 



Male. Length 5 lines. Closely resembles the female ; 

 the mandibles with a single tooth at the apex ; the basal 

 joint of the anterior tarsi broadly expanded into a thin 

 semi-transparent plate ; all the joints fringed behind with 

 long pale pubescence, towards the base of the first joint 

 it is fuscous; the apical segment rounded at its margin, 

 with a small acute tooth in the middle, 



Hab. Champion Bay. 



In the British Museum. 



