1911] 



Wann — Calif ornian Ant Gtiests 



31 



marginal lines sinnate between and diverging in front and rear of coxae. Front 

 femora about one third as wide as long. ^ ! 



Type and the single paratype taken from a nest of Formica rufibarbis var. 

 occidentalis Wheeler, at Stanford University, California. 



Fig. 1. Helcerius wheeleri, sp. nov. 



The size, structure of prothorax and the scattered, recumbent 

 hairs will separate this species from those near it. 



There are eleven denticles on the outer edge of the anterior 

 tibiae. The number seems to vary among the different species, 

 but to be fairly constant in the same one and may be of some 

 taxonomic importance. 



