33(5 i o it. \IICID.K. 



384. Formica fusca, Linn. Syst. Nut. ed. 10 (1738), p. 580 ; Fowl, 



Jour. Bomb. N. H. Soc. viii (1894), pp. 402, 403. 



. Dull fuscous red ; abdomen concolorous with the head and 

 thorax, not darker, very opaque and with dense silky shimmering 

 pubescence. Head shorter and a little broader than in F. trunci- 

 cola; clypeus very acutely medially carinate; thorax with the 

 constriction at the meso-metanotal suture very deep ; node of 

 the pedicel somewhat thick, more convex in front, more or less 

 flat posteriorly ; abdomen depressed, broad. 



Length, $ 4-5 mm. 



Hob. Himalayas, hills north of Mr.ssoorie (Rotliney), Sikhiin 

 (Moller) ; Central Provinces, Pachmarhi (Schurr). Outside our 

 limits widely spread through Europe, North Africa, Northern 

 Asia and North America. 



This species seems to be found at a lower level in the Himalayas 

 than any other of the genus. I have seen no $ or d from India. 



385. Formica gagates, Latr. Ess. Hist. Fourm. Fr. (1798), p. 36 ; 



For el, Jour. Bomb. N. H. Soc. viii (1894), p. 402. 



. Dark castaneous or piceous brown, smooth and shining, with 

 a few scattered erect hairs on the front of the head and on the 

 posterior half of the abdomen. Head narrower, with the cheeks 

 slightly flatter and straighter than in F. fusca ; clypeus compara- 

 tively large, convex, medially vertically carinate ; this carina in all 

 specimens from India that I have seen is slight, not acute, and 

 medially interrupted. Thorax above less deeply emarginate at 

 the meso-metanotal suture than in F. fusca. Node of the pedicel 

 convex in front, flat posteriorly, its upper margin rounded, 

 remarkably attenuate and sharp ; abdomen narrower, less de- 

 pressed and more convex above than in F. fusca. 



Length, $ 3*5-5 mm. 



Hab. Lahoul, frontier of Tibet (Sage). Northern and Central 

 Europe, Northern Asia and North America. 



380. Formica sanguinea, Latr. Ess. Hist. Fourm. Fr. 1798, p. '->>7 : 

 Forel, Jour. Bomb. N. H. Soc. viii (1894), p. 402, . 



$ . Head, thorax and legs a clear light red, slightly fuscous on 

 the head ; abdomen fuscous brown or black. Head, thorax and 

 abdomen dull and semiopaque, with a few scattered erect red 

 hairs on the front of the head, on the underside and at the apex 

 of the abdomen ; pubescence extremely minute and thin, giving 

 the insect a silky appearance. Head without the mandibles nearly 

 square ; mandibles strong, broad and very clearly dentate ; clypeus 

 convex, medially vertically carinate and incised or emarginate at 

 the apex of the carina ; antenna? more massive than in F. trunci- 

 cola, F. fusca, &c. ; head posteriorly distinctly widely emarginate. 

 Thorax narrower than the head, the emargination at the "meso- 

 metanotal suture deep and broad. Node of the pedicel sub- 



