WHEELER, NORTH AMERICAN ANTS 335 



Cumberland House is in Keewatin, and in the region through which he 

 traveled to reach that point, he could only have happened on luhymperi or 

 pennsylvanicus, and as most of his journey lay through British America, 

 it is more probable that he had a specimen of ivhymperi. I believe there- 

 fore that Forel is mistaken both in attributing the western form of 

 herciileanus above described to semipunctatus and in placing it under 

 pennsylvanicus. It is clearly more nearly related to whymperi and the 

 typical herculeanus of Europe. 



2S. C. herculeanus pennsylvanicus De Geer 



Formica Pennsylvanica De Geer, Mem. Serv. Hist. Insect., Ill, p. 603, No. 4, 

 PI. 31, Figs. 9-10, ^ 9 S, 1773; Goze. De Geer, Abh. Gesch. Ins., Ill, p. 391, 

 No. 4, PI. 31, Figs. 9-10, ^ <9 $ , 1780; Retzius, Gen. et Spec. Insect, p. 75, 

 No. 33^, 1783; Olivier, Encycl. Method. Insect, VI, p. 501, No. 52, 1791; 

 Latreille, Hist. Nat. Fourmis, p. 99, PI. 2, Fig. 3, 1802 ; Lepeletier, Hist. Nat. 

 Ins. Hymen., I, p. 213, No. 14, ^ $, 1836; Buckley, Proc. Entom. Soc. Pliila., 

 YI. p. 155, ^ 9, 1866; Provancher, Natur. Canad., XII, p. 355, No. 2, ^ $ , 

 1881 ; Faune Ent. Canad. Hymen., p. 598, No. 2, ^ $ 5 , 1883 ; McCook, Trans. 

 Amer. Ent Soc, V, p. 277-289, PI. 2-4, 1876. 



? Formica semipunctata W. Kirby, Fauna Bor. Amer., IV, p. 262, No. 362, 

 5, 1837. 



Formica caryw Fitch, Trans. N. Y. State Agri. Soc, XIV, p. 151, 5 2 5, 

 1854. 



Campoiwtus pennsijlvanicns Mayr, Verb. Zool. bot. Ges. Wien, XII, p. 666, 

 No. 24, 5 5, 1862; McCook, Proc Acad. Nat Sci. Pbila., 1878, p. 15-19; Ann. 

 Mag. Nat Hist, (5) XIII, p. 419, 1884; Idid., p. 140, 1879; Ern. Andre, Spec 

 Hymen. Europe, II, Pt. 13, p. 141, 1882 ; IMd., Pt. 14, p. 153, No. 3, 5 9 , 1882 ; 

 Dalla Torre, Catalog. Hymen., VII, p. 246, 1893. 



C. licrcuJcauus race peiiiisijluanicus Forel. Bull. Soc Vaud. Sci. Nat, (2) 

 XYI. P. 81, p. 57, 1879. 



C. herculeanus var. pennsylvanicus Mayr. Verb. Zool. bot. Ges. Wien, 

 XXX YI. p. 420, 1886. 



C. herculeanus subsp. pennsylvanicus Emery. Zool. .Tabrb. Abtb. f. Syst, 

 VII. p. 075, 1893; Wheeler, Bull. Amer. Mus. Nat Hist, XXI, p. 402, 1905;, 

 Occas. Papers Bost. Soc Nat Hist, VII, 7, p. 2.3, 1906. 



Worker major and minor. 



Differing from the preceding forms of herculeanus in sculpture, pilosity and 

 color. The head and thorax are somewhat less coarsely shagreened and ap- 

 pear therefore more shining. This is especially true of the sides and posterior 

 corners of the head. The gaster is opaque and very coarsely shagreened, with 

 the punctures that bear the pubescence larger and more transversely elongated. 

 The hairs and pubescence are more abundant and longer than in ichymperi 

 and modoc and of a pale yellow or wliite color. On the gaster, tlie pubescence 

 is extremely long and taljes the form of dense, appressed hairs which conceal 

 the ground surface and give this region of the body an ashy tint and silliy 

 luster. In what may be regarded as the typical form of the subspecies, the 



