538 IMr. T. D, A. Cockerell — Descriptions and 



at extreme sides of scutellani ; a small spot of white hair 

 behind tegulse, but no spots in the scutello-mrsothoracie 

 suture ; tegulre dark rufous. Wings slightly dusky^ nervures 

 black ; second r. n. joining second s.m. at extreme apex; all 

 the tibiae and tarsi, and anterior femora except at base, deep 

 but bright eliestnut-red, the tarsi with a good deal of white 

 liair. Abdomen ■nith a large jiatch of white iK.ir at each side 

 of first and second segments, third to fifth with hair-l)an(ls, 

 that on s:'Cond weak in middle; sixth covered with white 

 l;air, its apical margin red, and irregularly dentate, with about 

 four prominent rounded teeth (in the type specimen there 

 are two teeth on one side, but on the other one, the outer, 

 tooth, and the place of the inner one minutely crenulate) ; 

 the extreme antero-lateral corners of the sixth segment have 

 a sharp thorn-like tooth ; the subapical ventral region shows 

 two long dark rod divergent teeth or spines. Anterior coxaj 

 with rather short spines. 



Hub. Fremantle (/. /. Walker, 1937). 



Very distinct by the armature of the abdomen &c. Named 

 after Air. W. F. Kirby, of the British Museum. The locality 

 is in AVestern Australia. 



Megachile iomentella, sp. n. 



J . — Length about 8 mm. 



lilack, with a ])arallcl-sidcd abdomen ; one of the small 

 Heriades-Wke forms, superficially similar to AL nigrovittata 

 and M. rhodura. 



Face with perfectly white hair; mandibles black, bidentate ; 

 fiagellum beneath pruinosc and very faintly brownish; vertex 

 broad and very densely punctured, distance from hind ocellus 

 to edge of occiput much greater than distance to opposite 

 hind ocellus ; mesothorax and scutellum extremely densely 

 punctured ; tegulse piceous. "Wings hyaline, with black 

 nervures. Legs black, with pale pubescence; anterior tarsi 

 simple; spurs white; elaw-joints mainly ferruginous ; abdo- 

 men very strongly punctured, the bases of the second and 

 third segments depressed ; no hair-bands, but fifth segment 

 and base of sixth covered with orange tomentum, a few 

 orange hairs also on hind margin of fourth ; apex of sixih 

 broadly emarginate. Anterior coxae without spines. 



Hub. Swan Eiver, " 69. 50.^' 



Allied to M. erythropyga (but hair of face quite a different 

 colour) and to M. canifrons (but end of abdomen different). 



