1906.] Wheeler, The Ants of Japan. 3^3 



40. Formica rufa pratensis DeGeer. 



Formica pratensis Forel, Ann. Mus. Zool. Acad. Imper. Sc. St. Petersb. 

 VIII, 1903, p. iS, 9 



Forel records a female of this palearctic subspecies of F. rufa L. 

 from the island of Sakhalin. It will probably be found also in the 

 northern portion of Japan or at high altitudes. 



41. Formica rufa truncicola Nylander. 



Formica truncicola Forel, Ann. Mus. Zool. Acad. Imper. Sc. St. Petersb., 

 VIII, 1903, p. 18,9 



Formica rufa r. truncicola Ern. Andre, Bull. Mus. d' Hist. Nat. Paris, 

 1903, p. 128, 9 



Forel has also recorded a female of this subspecies from the Island 

 of Sakhalin. Ern. Andre mentions a specimen of the same sex from 

 Japan. 



42 . Formica rufa truncicola Nylander var. yessensis Forel. 



Forel, Mittheil. naturhist. Mus. Hamburg, XVIII, 1901, p. 66, $ 



This variety, according to Forel, "is distinguished from the 

 typical truncicola by its sparser erect hairs, which are very sparse 

 on the antennal scapes and completely lacking on the extensor surface 

 of the tibiae; only on their lower surfaces are there any of the oblique, 

 stouter hairs. The basal surface of the epinotum is also somewhat 

 shorter and more convex." The types of this apparently northern 

 form were collected in Serachi, province Ishikari, Yezo. 



43.- Formica fusca Linn. var. nipponensis Forel. 



Forel, Bull. Soc. Ent. Suisse, X, 7, 1900, p. 270, $ 



Forel, Mitth. naturhist. Mus. Hamburg, XVIII, 190 t, p. 66, 9 



Ern. Andre, "Bull. Mus. d' Hist. Natur. Paris, 1903, p. 12S. 



• Numerous workers collected by Professor J. F. Abbott near the 

 Marine Biological Laboratory at Misaki and by Mr. Hans Sauter at 

 Kanagawa (1700 ft.; "nest in ground on border of pond") and 

 Takakiyama. Forel 's specimens were from the island of Yezo and 

 from Tokio. 



The head and thorax of this variety resemble in their lustre the 

 corresponding parts of the European fusca and the North American 

 var. subscricea, but, as Forel has remarked, the gaster is much more 

 opaque than in either of these forms. The legs and antennae are 

 redder than in the typical subsericea. 



