100 THE AMERICAN NATURALIST. 
'00a 
Mayr, Gustav. Formicidae Nove Americana Collectz a Prof. P. de 
Strobel. Annuario della Soc. d. Naturalisti. Ann. III (Modena, 
1868), p. 1-20. 
Neue Formiciden. Verh. k. k. zool. bot. Ges. 1870. 
Siidamerikanische Formiciden. Verh. k. k. zool. bot. Ges. 
Bd. xxxvii (1887), pp. 511-632. 
MocGRIDGE, J. T. Harvesting Ants and Trapdoor Spiders. London, 
L. Reeve & Co., 1873. 
OBERWETTER, P.H. The Wild Plants of Texas. Gardiner’s Monthly 
and Horticulturist. Vol. xxviii, Feb., 1886. 
PERGANDE, THEO. Ona Collection of Formicidae from Lower Califor- 
nia and Sonora, Mexico. Proc. Cal. Acad. Sci. (Ser. 2). Vol. iv 
(1893), pp. 26-36. 
SMITH, FREDERICK. Catalogue of Hymenopterous Insects in the 
Collection of the British Museum. Pt. vi, Formicidae. London, 
1858. 
TREAT, Mary. Chapters on Ants, in Harper’s Half Hour Series. 
1877. 
WHEELER, W. M. A Study of Some Texan Ponerine. Biol. Bull. 
Vol. ii, No. 1 (Oct., 1900), pp. 1-31, figs. 1-10. 
The Habits of Ponera and Stigmatomma. Biol. Buli. Vol. ii, 
No. 2 (Nov., 1900), pp. 43-69, figs. 1-8. 



mE 
CoLEBROOK, CONN., September 9, 1901. 
