Bramble-bees and Others 



cluslvely of males. These instances seem to 

 show that the Psen arranges her laying in a 

 succession of females and a succession of 

 males; but they tell us nothing of the rela- 

 tive order of the two series. 



From the Spider-huntress, Trypoxylon fi- 

 giilus, I learned nothing decisive. She ap- 

 peared to me to rove about from one bramble 

 to the next, utilizing galleries which she has 

 not dug herself. Not troubling to be eco- 

 nomical with a lodging which it has cost her 

 nothing to acquire, she carelessly builds a few 

 partitions at very unequal heights, stuffs three 

 or four compartments with Spiders and passes 

 on to another bramble-stump, with no reason, 

 so far as I know, for abandoning the first. 

 Her cells, therefore, occur in series that are 

 too short to give us any useful information. 



This is all that the bramble-dwellers have 

 to tell us; I have enumerated the list of the 

 principal ones in my district. We will now 

 loolc into some other Bees who arrange 

 their cocoons in single files : the Mega- 

 chiles, who cut disks out of leaves and fashion 

 the disks into thimble-shaped receptacles; the 

 Anthidia, who weave their honey-wallets out 

 of cotton-wool and arrange their cells one 



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