338 ANNALS NEW YORK ACADEMY OF SCIENCES 



may do considerable damage by tunneling in beams and rafters and may 

 become a domestic nuisance by visiting the sweet food-stuffs in kitchens 

 and pantries. Its habits were first studied by McCook. Eecently Pricer 

 and Miss Edith Buckingham have made many interesting observations 

 on its polymorphism and behavior. 



29. C. herculeanus pennsylvanicus var. mahican nom. nov. 



C. herculeano-pennsylvaniciis Forel, Bull. Soc. Vaucl. Sci. Nat., XVI, P. 81, 

 p. 57, ^ , 1879. 



C. herculeanus var. herciileano-pennsylvanicus Emery, Mem. R. Acad. Sci. 

 1st. Bologna, p. 770, 1896. 



Worl^er major and minor. 



Differing from the typical pennsylvanicus only in pilosity and color. The 

 hairs and pubescence are pale yellow as in pennsylvanicus, but the pubescence 

 on the gaster is shorter and sparser, though longer than in modoc. The legs 

 and petiole are red and the thorax is more or less tinged with the same color, 

 at least on the pleurre. Posterior borders of gastric segments dull yellow. On 

 the whole, this variety seems to be intermediate between whymperi and penn- 

 sylvanicus. 



Described from a number of workers taken in the following localities : 



Massachusetts: Cambridge (Mus. Comp. Zool.) ; Woods Hole 

 (Wheeler). 



New Jersey: Englewood (Wheeler). 



Forel mentions this form also from the Alleghanies, New York. Illi- 

 nois and South Carolina. 



I have attached this variety to pennsylvanicus, because it shows a 

 greater affinity to this form than to the true herculeanus, and I have 

 ventured to give it a new name, because the one by which it has been 

 known is not properly a varietal name and is very unwieldy. Whether 

 this form is worthy of recognition as an independent variety cannot be 

 decided without more material than I have been able to examine. 



30. C. herculeanus pennsylvanicus var. ferrugineus Fabr. 



Formica ferruginea Fabricius. Suppl. Entom. Syst, p. 279, No. 11-12, ^ $ , 

 1798 : Latreille, Hist. Nat. Fourm., p. 94, 1802 ; Fabricius, Syst. Piez.. p. .399. 

 No. 14, 1804 ; F. Smith, Catalog. Hymen. Brit. Mus., VI, p. 53, No. 187, 1858. 



Camponotus ferrugineus Mate, Verb. Zool. hot. Ges. Wien, XIII, p. 399, 1863. 



C. pennsylvanicus var. ferrugineus Forel, Bull. Soc. Vaud. Sci. Nat, (2) 

 XVI, P. 81, p. 56, 1879 ; Emery, Zool. Jahrb. Abth. f. Syst, VII. p. 668, 1893 : 

 Dalla Torre, Catalog. Hymen., VII, p. 247, 1893 ; Wheeler, Bull. Amer. Mus. 

 Nat. Hist, XXI, p. 402, 1905 ; Occas. Papers Bost Soc. Nat Hist., VII, 7, p. 2,3, 

 1906. 



