330 Mr. G. Meade-Waldo on 



tergite 3 laterally with white pubescence ; tergite 6 with a 

 patch of ferruginous-red hairs. Scopa black. Wings sub- 

 hyaline. 



Mandibles fairly robust, tridentate, with distinct carin£e 

 towards apex. 



Chjjpeus rather broader than long, the apex truncate. 

 There is a sharp tubercle on the metasternum between 

 the hind coxse. Abdomen parallel-sided, tergites 2 and 3 

 with broad, shallow, transverse sulci. Whole covered with 

 uniform fine punctures, enclosed area at base of median seg- 

 ment and truncation of first abdominal seguient impunctate. 



Length 16 mm. 



$ . Differs from the ? in having only lateral spots {^not 

 fasciae) on the apex of segments 1 and 2 ; the general appear- 

 ance is more hirsute than the ? . In secondary sexual 

 characters the following are chiefly noticeable ^ — antennse 

 simple ; anterior tarsi flattened, not dilated, their colours 

 from ferruginous to ivory-white. Tergite 7 is black ; con- 

 cave, but curled out towards apex ; the apex is serrate. 



Length 15 mm. 



S.W, Australia: Yallingup, Nov.-Dec. 1913 [R. E. 

 Turner). 



A long series o£ both males and females. 



The sexes of this fine species are very different in appear- 

 ance, but Mr. Turner has no doubt whatever that they are 

 correctly associated. He found the females burrowing in 

 sandy banks and the males flying round the burrows in 

 profusion. Some of the females have large globules of gum 

 in their mandibles, evidently taken up from the Eucalyptus 

 known as the " red gum." The gum thus collected is 

 probably used either to keep the sand from falling in on the 

 burrows or to gum together the leaves of which the cells are 

 made. Similar gum was found in the mandibles of specimens 

 of M. nasuta, F, Smith. 



22. Megachile leeuwinensis, sp. n, 



2 . Nigra ; capite, thorace, tergitibus 1-5 fasciis apicalibus griseo^ 



pilosis; sternitibus b-\-Q tergiteque 6 rufis, pallide hirsutis ; 



scopa plerumque albida ; clypeo brevi, apice emarginato ; maii- 



dibulis robustis, dentatis ; alis hyalinis. 

 Long. 1 1 mm. 

 cJ similis, sed tergitibus 5-7 rufis ; articulo 2 tarsorum dilatato, 



tergite 7 concavo-dentato. 



Black ; head, thorax, and apical fasciae on tergites 1-5 

 clothed with fulvous-grey pubescence; tergites 4-6 more or 



