No. 414.] NESTS OF AMERICAN ANTS. 433 
though single nests of the Myrmica were frequently found. My 
observations were therefore to be confined to only one nest. 
The worker of Myrmica brevinodis, which I shall not pause 
to describe, is represented in Fig. 1. The Leptothorax, however, 
Fic. 1. — Myrmica brevinodis Emery. Worker. 
is of greater interest in this connection and certainly merits a de- 
scription before we proceed with an y observations on its behavior. 
Leptothorax emersoni n. sp.! 
Worker (Fig. 2). Length 2.5-3.5 mm. 
Brownish yellow ; upper surface of the head except the 
mandibles, clypeus, and a narrow postclypeal and occipital 
! I take pleasure in dedicating this species to Mr. Ralph Emerson in memory 
of the many h hich together at Rockwell Hall in Colebrook. 
pigg i me x di hours Y P 
