the Apidoe in the British Museum. 



Ali) 



sides of the emargination produced to form two tubercles ; 

 mandibles massive, 4-toothed. Whole insect somewhat 

 sparsely and evenly punctm-ed, metatarsus iii. broader than 

 tibiae. 



Length 15 ram. 



(J . Similar to female, but smaller. Face and clypeus 

 clothed with pale hair. First joint of anterior tarsi dilated, 

 anterior coxse armed with spines. 



2 ? ?,1 cJ. 



Gambia (F. Smith Coll.), (J ? (type) ; Zungeru, N. Ni- 

 geria {Dr. W. Morrison), ? . 



JMost nearly allied to M. bituberculata, B,\ts., = sjdstedti, 

 Fr., but at once separated from that species by the red legs 

 and black ventral scopa. The species bore a MS. laljel 

 " cyanipennis, Guer./^ in F. Smith's Coll., and it certainly 

 bears a superficial resemblance to that species. 



Key to the Australian Species of Megachile described 

 by F. Smith. 



22. 



( Clypeus very short, 3-4 times as broad 



as long, more or less armed with tu- 



J bercles at apex. Scopa pale, black 



] species with pale pubescence 



Clypeus normal, 1-2 times as broad as 

 1^ long ; variously coloured insects .... 

 f Clypeus truncate, the apex armed with 



I a small tubercle or tubercles 



J Clypeus with a broad, medio-apical, sub- 

 ' quadrate lobe, or else porrect, with the 

 apex semicircular ; wings fusco-hya- 



2. Subg. Emnegachile. 

 6. Subg. Megachile. 

 3. 



line 



Apex of clypeus with small lateral tu- 

 bercles; head very massive; wings 



fuscous; abd. tergite 1 -with white 



pubescence ; scopa pale testaceous. 



L. 21 mm. (Champion Bay.) monstrosa. 



Clypeus with a small medio-apical 



tubercle ; head normal ; wings fusco- 



hyaline ; abd. tergites 1 and 2 vnth. 



white pubescence ; scopa pale yellow. 



(^ L. 18 mm. (Adelaide.) . , semiluctuosa. 



f Apex of clypeus with a broad, medio- 

 apical, subquadrate lobe ; face covered 



with dense golden pubescence; abd. 



tergite 6 with silver-grey pubescence. 



L. l3 mm. (" New Holland.") .... aurifrons. 

 Clypeus porrect, the apex semicircular ; 



face sparsely clothed with grey hairs ; 



abd, tergite 6 with golden pubescence, 

 l^ L. 12 mm. (Champion Bay.) namtn. 



