2 
Psyche 
[March 
of Myrmica in various plant communities of the bog sere 
has been noted, including M. brevinodis and M. fracti- 
cornis Emery. In spite of intensive observations on ap- 
proximately 300 Myrmica colonies, no nests of provancheri 
have been found. 
On the morning of July 22, 1955, several hours were 
spent in Mud Lake Bog, Section 7, Munro Township, 
Cheboygan County, Michigan, searching for nests of M. 
fracticomis. Colonies were found in an immature leather- 
leaf community, which was characterized by a continuous 
sphagnum surface and numerous small clumps of shrubs 
and small trees, composed largely of leatherleaf, highbush 
blueberry, black spruce, and tamarack. The remains of 
some dead coniferous trees indicate that this is probably 
a disclimax community produced by a fire sometime within 
the last twenty years. 
The hummocks of moss at the base of the south edge 
of a clump of the trees and shrubs named above contained 
a populous colony of fracticomis. While this nest was 
being sampled, several workers of provancheri were dis- 
covered moving about the galleries and chambers of the 
nest. Seven provancheri workers were collected and kept 
alive with a small portion of the fracticomis colony. 
Other workers of provancheri were carefully watched in 
order to find the location of their nest. These workers 
were soon lost, and their nest was not located. Most 
likely it was somewhere on the periphery of the fracti- 
cornis nest, and it may have been destroyed or displaced 
during collecting. 
Smith (1951, pp. 821-822) cites records for provancheri 
and its synonyms from four New England States, Colorado, 
and Alberta, Canada, and it also occurs in North Dakota 
(Kannowski, 1956). The present record is the first from 
Michigan and, together with the North Dakota locality, 
ties together a previously discontinuous distribution. Cole’s 
record from New Mexico is the only extension to the 
geographic range of this ant given by Creighton (1950, 
pp. 279-280). The range of provancheri is blanketed by 
the ranges of both of its known host species (see Creighton, 
op. cit., pp. 96 and 100). Therefore, provancheri could 
