78 ANIMAL ECOLOGY 



Description and keys to saw-fly and Lepidopterous 



larvae. 

 TOWNSEND, C. H. T. 



1893. A General Summary of the Known Larval Food- 

 habits of the Acalyptrate Muscidse. Can. Ent., 

 Vol. XXV, pp. 10-16. 

 WARD, H. B., WHIFFLE, G. C., and others. 



Fresh Water Biology. (In press.) New York. 

 This work consists of chapters by numerous special- 

 ists on the various groups of fresh-water animals 

 including insects, gives keys for the determination 

 of specimens, short chapters on their general bio- 

 logical relations, and references to the literature. 



