( xl ) 



with Osmia tricorne, exploits the vast constructions of Chalico- 

 dome des hangars. [Not Chalicodoma muraria. The species 

 meant is said elsewhere by Fabre to be C. pyrenaica, Lep. =-= 

 pynhopeza, Gerst.] It finds the superb cells of Anthophora 

 a masque [jpersonata, i. e.fulvitarsis, Brulle] much to its liking; 

 it gladly establishes itself in the hollow of recumbent 

 reeds. 



" I have already mentioned Osmia cyanoxantha, Perez, 

 which selects for its domicile the old nests of Chalicodome des 

 galets. [This is C. muraria apparently. Fabre also calls it 

 " Chalicodome des murailles. La Maconne qui batit sur les 

 galets." See p. Ill of the same volume of " Souvenirs."] 

 Its closing plug is of a strong concrete, composed of pretty 

 large bits of gravel embedded in the green paste ; but for the 

 interior partitions the cement alone is used. Since the door 

 of the dwelling, situated in the curve of a dome which does 

 not give any protection, is exposed to the inclemency of the 

 weather the mother has to provide for its defence. The 

 danger, no doubt, inspired this gravel concrete. 



" Osmia aundenta, Latr., absolutely demands dead snails 

 for its dwelling. Helix nemorale, Helix des gazons, and, above 

 all, Helix chagrinee (H. aspersa), with its more spacious spiral, 

 distributed here and there among the herbage, at the foot of 

 walls and rocks exposed to the sun, habitually furnish its 

 dwelling. Its dried cement is a sort of felt abounding with 

 short white hairs. It must come from some plant with downy 

 foliage, perhaps a Borage, rich both in mucilage and in hairs 

 suitable for its felt. 



" L'Osmie rousse [Osmia rufohirta, Latr.] has a penchant 

 for Helix nemorale and Helix des gazons, where I have seen it 

 take refuge in April when the north wind blows. Its work is 

 not as yet thoroughly known to me. It is probably very like 

 that of 0. aundenta. 



" The delicate Osmia viridana, Morawitz, lodges in the spiral 

 staircase of Bulima radiata. It is very elegant, but very 

 small, and the greater part of the dwelling consists of the green 

 cement stopper. There is just enough room for two. 



" Osmia andrenoides, Latr., so unique [i. e. in this genus; 

 but here Fabre is not quite correct, for there are a few others], 





