( xlii ) 



; ' Attaches little masses of pollen and honey to the under- 

 side of a stone or slate lying on the ground and having a hollow 

 space beneath ' (Smith). A mountain or northern species, 

 recorded as parietina by Smith. R. C. L. P." 



" The true Osmia parietina, Curtis (nee Smith, etc.), is also 

 a British species (Vide Edw. Saunders in Ent. Mo. Mag., 

 Sept. 1906, p. 205). I have it, but do not know how it 

 nidificates. F. D. M." 



3. Osmia leaiana, Kirb. (fulviventris, Auct. Brit.). Nidifica- 

 tion similar to caerulescens. Dr. R. C. L. Perkins describes 

 this bee as an inexpert leaf-cutter of old and yellow leaves. 



" The ' cutting rose-leaves in an irregular manner ' which I 

 recorded under 0. fulviventris (i. e. leaiana) and suggested 

 was a primitive state of the Megachile habit many years 

 ago, is that described by Fabre in the passage beginning 

 ' All the other Osmias, etc.,' on p. xxxix. The portions cut out 

 from the rose-leaves by leaiana were chewed up and formed 

 the paste or cement between the cells. Fabre says when 

 fresh it is ' always green,' but this could not have been the 

 case with that of the bees I watched cutting and chewing 

 the rose-leaves, as I particularly noticed they always choose 

 the decayed or discoloured leaves, never green ones 

 R. C. L. P." 



4. Osmia leucomelana, Kirb. " Generally makes its cells 

 in bramble stems, but last spring (May 1893), I found it rather 

 freely, burrowing along the side of a sandy road on Woking 

 Common " (Saunders, p. 338). 



" In buried decayed wood; in dead stumps, or decayed 

 wood above ground; in hollo wed-out (dead) bramble stems. 

 Fide Saunders in the ground (sandy), but when I have seen the 

 bee go underground there has been decayed wood beneath the 

 surface — often a root. R. C. L. P." 



5. Osmia pilicornis, Smith. " Dead stumps, or detached 

 pieces of dead wood lying on the ground, or in dead branches 

 of growing trees. R. C. L. P." 



" I once took a $ entering a hole in a piece of dead wood 

 lying on the ground. A. H. H." 



6. Osmia xanthomelana, Kirby (atricapilla, Curtis). Most 

 of the descriptions of the nidification of this species — perhaps 



