120 
Psyche 
[September 
widespread areas in the Rocky Mountains. The northern 
distribution brings subnuda into broad contact with 
Formica neorufibarbis, which frequently is pressed into 
slavery. 
Formica subintegra Emery (figs. 1, 7) 
Formica sanguinea var. subintegra Emery, 1893, Zool. 
Jahrb. Syst., 7: 648; worker. Type locality: District 
of Columbia. 
Formica subintegra Creighton, 1950, op. cit., p. 470. 
Formica pergandei Emery, 1893, op. cit., pp. 646-647 ; 
worker. Type locality: District of Columbia. New 
Synonymy. 
Formica sanguinea rubicunda Emery, 1893, op. cit., pp. 
647-648; worker, queen. Type locality: Pennsylvania. 
New Synonymy. 
Formica rubicunda, Creighton, 1950, op. cit., p. 468. 
Formica sanguinea puberula Emery, 1893, op. cit., p. 648; 
worker. Type locality: Hill City, South Dakota. New 
Synonymy. 
Formica puberula, Creighton, 1950, op. cit., p. 468. 
Formica sanguinea rubicunda var. sublucida Wheeler, 1913, 
Bull. Mus. Comp. Zool. Harv., 53: 408; worker. Type 
locality : Stony Brook Reservation, near Boston, Mass. 
New Synonymy. 
Formica sublucida, Creighton, 1950, op. cit., p. 471. 
Formica sanguinea subintegra var. gilvescens Wheeler, 
1913, op. cit., pp. 412-413; worker. Type locality: 
Tuckahoe, New York. 
The involved synonymy under subintegra has been the 
principal source of difficulty in the taxonomy of the san- 
guinea group. Myrmecologists in recent years have wasted 
untold amounts of time trying to distinguish species, the 
types of which represent nothing more than trivial infra- 
specific variants. The characters on which these species 
