200 
Psyche 
[December 
added that in the neighborhood of Hill City the nests of 
ulkei are widely separated with little evidence for the forma- 
tion of daughter colonies through migration. Further south, 
however, in the Custer State Park the author found areas 
in which there were several nests in close proximity. Al- 
though these multiple nest colonies are perhaps less numer- 
ous than the enormous groups formed by the eastern ex- 
sectoides there is ample evidence that ulkei does on occasion 
form daughter colonies by migration. 
LITERATURE CITED 
(1) Wheeler, W. M. An Annotated List of the Ants of 
New Jersey. Bull. Amer. Mus. Nat. Hist. Vol. XXI, No. 
XXIII, p. 386 (1905) 
(2) Wheeler, W. M. Fauna of New England. List of the 
Formicidse. Boston Soc. Nat. Hist. Occasional Papers 
No. 7, p. 9 (1906) 
(3) Wheeler, W. M. Insects of Connecticut. Formicoidea. 
Bull. Conn. Nat. Hist, and Geo. Surv. No. 22, p. 589 
(1916). 
(4) Wheeler, W. M. The Occurrence of the Pavement Ant 
( Tetramorium csesyitum L.) in Boston. Psyche XXXIV, 
1927, pp. 164-165. 
(5) Wheeler, W. M. Ants. Columbia Univ. Press, p. 460 et 
seq. (1913). 
(6) Wheeler, W. M. A Revision of the Ants of the Genus 
Formica. Bull. Mus. Comp. Zool. Vol. LIII, No. 10, p. 487 
(1913). 
