HISTORY OF LITERATURE. 25 



S. J. Wasmann, in 1897, published a short, but highly 

 interesting paper,* chiefly upon Tyroglyphus Wasmanni 

 and the behaviour of its hypopial nymph in ants' nests, 

 where the species multiplies to an extraordinary extent. 

 The contents of this paper will be dealt with under the 

 head of the species, and under that of " the hypopial 

 nymph " in the chapter on development. 



* " Ueber einige myrmecophile Acariden," in ' Zool. Anz.,' 1897, 

 No. 531, pp. 170173, No. 541, pp. 347350. 



