106 



Psyche 



[June 



5 contained one Hetoerius trisiriatus, and one Hister subopaciis. 

 Another contained one H. tristriatus. A third nest, a flourishing 

 one, was under observation from March 24 to June 1, during which 

 time six Cremastochilus knochii, one C. pilosicollis, seven Hetcerius 

 tristriatus, and six specimens of an undescribed species of Hetcerius, 

 were taken. All of these myrmecophiles and also Myrmecophila 

 manni Schimmer, were taken with independent colonies of argen- 

 tata at Pullman and at Wawawai. The new Hetcerius I am de- 

 scribing as H. exiguus sp. nov. 



Formica fusca var. between neoclara and argentata. — 

 Common at Wawawai, Wash., where, during March, every nest 



sheltered numerous inquilines — 

 Hetcerius tristriatus, Cremastochi- 

 lus knochii, Myrmecophila manni. 

 Formica fusca var. subae- 

 nescens Emery. — One Cremasto- 

 chilus knochii, San Juan Island, 

 Wash., July, 1910. 



Formica fusca var. neorufi- 

 barbis Emery. — San Juan Island, 

 Wash. , Myrmecophila jormicarum 

 Scudder was abundant. 



Formica fusca. — Three un- 

 described varieties on San Juan 

 Island, in July. Myrmecophila 

 Jormicarum occurred in all, and 

 with one, two specimens of 

 Cremastochilus pilosicollis were 

 taken, one of them by Prof. 

 McConnell, of the Pennsylvania 

 State College. 



Formica subpolita var. neogagates Emery. — Very common in 

 vicinity of Pullman. Cremastochilus knochii occurred in nearly 

 every nest during March. Myrmecophila manni was found, but 

 rarely. 



Formica manni Wheeler. — Nests found at Wawawai, Pull- 

 man, Wapota, Kiona, and Wenatchee, Wash. This seems to be the 

 characteristic Formica of the upper Sonoran zone in Washington, 

 and it occurs also in the Transition zone at Pullman. A single 



Fig. 1. Coleopterona larva, probably 

 a Coccinellid, taken with Formica 

 camponoticeps. 



