THE ANTS OF NORTHERN COLORADO 221 



individuals prey on larvae and pupae and eat the food of their hosts. They often live with 

 species of Myrmica, Formica, Lasius and Stenamma. In the eastern states Solenopsis 

 molesta has become a house-pest. 



Tapinoma sessile Say. This small, black ant has a wide altitudinal range, being 

 found from 5,000 feet to 10,500 feet. The workers have a peculiar rancid-butter odor. 



Partial List of Papers Mentioning Colorado Ants 



Cresson, E. T., "Catalogue of Hymenoptera in the Collection of the Entomological 



Society of Philadelphia from Colorado Territory," Proc. Ent. Soc. Philad., pp. 242- 



313, 426-488, 1865. 

 McCook, M. C, "The Honey Ants of the Garden of the Gods and the Occident Ants of 



the American Plains," Proc. Acad. Nat. Sci. Philad., p. 303, 1882. 

 , "The Rufous or Thatching Ant of Dakota and Colorado," Proc. Acad. Nat. Sci. 



Philad., pp. 57-65, 1 884-1 885. 

 , "Honey Ants of the Garden of the Gods," Harper's Monthly, pp. 126-133, June, 



1906. 

 Wheeler, William Morton, "The Occurrence of Formica cinerea Mayr. and Formica 



rufibarbis Fabricius in America," Amer. Nat., Vol. XXXVI, No. 432, pp. 947-952, 



1902. 

 , "A New Agricultural Ant from Texas, with Remarks on the Known North 



American Species," Amer. Nat., Vol. XXXVI, No. 422, pp. 85-101, 1902. 

 , "A Revision of the North American Ants of the Genus Leptothorax Mayr.," 



Proc. Acad. Nat. Sci. Philad., pp. 215-260, 1903. 

 , "Extraordinary Females in Three Species of Formica, with Remarks on Mutation 



in the Formicidae," Bull. Amer. Mus. Nat. Hist., Vol. XIX, Art. XXVIII, pp. 639- 



651. 1903- 

 , "Some New Gynandromorphous Ants, with a Review of the Previously Recorded 



Cases," Bull. Amer. Mus. Nat. Hist., Vol. XIX, Art. XXIX, pp. 653-683, 1903. 

 , "A New Type of Social Parasitism among Ants," Bull. Amer. Mus. Nat. Hist., 



Vol. XX, Art. XXX, pp. 347"375, 1904. 

 , "A Crustacean-eating Ant (Leptogenys elongata Buckley)," Biol. Bull., Vol. VI, 



No. 6, pp. 251-259, 1904. 

 — , "Three New Genera of Inquiline Ants from Utah and Colorado," Bull. Amer. 



Mus. Nat. Hist., Vol. XX, Art. I, pp. 1-17, 1904. 

 — , "New Species of Formica," Bull. Amer. Mus. Nat. Hist., Vol. XXI, Art. XV, pp. 



267-274, 1905. 

 — , "The North American Ants of the Genus Liometopum," Bull. Amer. Mus. Nat. 



Hist., Vol. XXI, Art. XX, pp. 321-333, 1905. 

 — , "The Habits of the Tent-making Ant (Cremastogaster lineolata Say)," Bull. 



Amer. Mus. Nat. Hist., Vol. XXII, Art. I, pp. 1-18, 1906. 

 — , "The Ants -of the Grand Canon," Bull. Amer. Mus. Nat. Hist., Vol. XXII, Art. 



XIX, pp. 329-345, 1906. 

 - — , "On the Founding of Colonies by Queen Ants, with Special Reference to the 



Parasitic and Slave-making Species," Bull. Amer. Mus. Nat. Hist., Vol. XXII, Art. 



Iv > PP- 33- io 5. I 9° 6 - 



