1934 ] 
A New Strumigenys 
65 
Color ferruginous ; appendages somewhat lighter ; gaster 
with a brown band across the middle. 
Holotype : One worker taken by T. H. Frison and H. H. 
Ross at Herod, Illinois, October 12, 1933. To be deposited 
in the collection of the Illinois Natural History Survey. 
This species runs to S. clypeata Roger in Dr. M. R. 
Smith’s key. 1 From two cotypes of clypeata in Dr. W. M. 
Wheeler’s collection, however, it differs in a number of 
distinct characters. The open area at the base of the inner 
margins of the mandibles is larger and more distinct; the 
fourth joint of the funiculus is not distinctly longer than 
the first ; the peduncle of the petiole is not cylindrical as in 
clypeata; the pilosity of the head is less abundant, especially 
on the clypeus where the hairs are narrow-squamose (the 
hairs on the clypeus and along the antennal scape of cly- 
peata are clayate in the two cotypes). From three co types 
of S. pulchella Roger it differs in more converging anterior 
margins of the head, larger mandibles, shape of the pedicel 
and in pilosity. 
3 Smith, M. R., A Revision of the Genus Strumigenys of America, 
North of Mexico, Based on a study of the Workers, Ann. Ent. Soc. 
Amer., 1931, 24, 685-710, 4 pi. 
