SOME ANNOYING PESTS OF MAN 325 



REFERENCES TO ECONOMIC LITERATURE ON THE HARVEST MITES 



1896. HAMILTON, JOHN. The red bug. Entomological News, 



Vol. VII, p. 2. 

 1896. OSBORN, H. Harvest mites ; chiggers. Bull. 5, n.s., Bu. 



Ent., U. S. Dept. Agri., p. 251. 



1905. BANKS, NATHAN. A treatise on the Acarina or mites. Proc. 

 U. S. Nat. Mas., Vol. XXVIII, p. 1. 



1906. CHITTENDEN, F. H. Harvest mites or "chiggers." Circ. 

 77, Bu. Ent., U. S. Dept. Agri. 



1906. BRAUN, MAX. The animal parasites of man, p. 351. 



1908. WASHBURN, F. L. The irritating harvest mites or "jigger." 

 Twelfth Kept, of the State Ent. of Minn., p. 156. 



1909. GOSSARD, H. A. Harvest mites, "jiggers," or "chiggers." 

 Press Bull, of the Ohio Expt. Stat., 205. 



1909. HERRICK, GLENN W. Notes on mites affecting chickens. 

 Jr. of EC. Ent., Vol. 2, pp. 341-342. 



WASPS 

 Vespa germanica and Vespa maculata 



It often happens that the two species of wasps men- 

 tioned, namely, the common yellow-jacket and the bald- 

 faced hornet, build their nests near a house and become 

 unwelcome guests about the premises and in the rooms. 

 The former, especially, are fond of the juice of broken or 

 discarded fruit and of sweet liquids. They often swarm 

 over fruit refuse and visit wells and other sources of water 

 to obtain moisture. Usually they are the cause of more 

 nervousness and fright than of actual injury, although they 

 may occasionally sting horses and, what they consider, 

 intruding humans. 



Life history and habits of these wasps. The yellow- 

 jackets (Fig. Ill) are small, somewhat slenderer than the 



