27. Formica herculanea. Pl. III. figs. 2, 15, 16. B.M.
Formica herculanea, Linn. Faun. Suec. 1720; Syst. Nat. i. 962.1.
Fabr. Syst. Ent. 391. 1; Ent. Syst. ii. 349. 1; Syst. Piez. 395. I.
Oliv. Encycl. Meth. vi. 491. 1.
St. Farg. Hym. i. 209. 11.
Zett. Ins. Lapp. 448.
Brulle, Exped. Sc. de Moree, iii. 326. 720.
Nyl. Adno. Mon. Form. Bor. 894. 1; Addit. Adno. Mon. Form. 1044.
Foerst. Hym. Stud. Form. 9. 1.
Mayr. Form. Austr. 36. 2.
Menetr. Mem. Acad. Imp. des Sc. St. Petersb. vi. 307. 83.
Formica rufa, Linn. Faun. Suec. 1721 [[worker]].
Zett. Ins. Lapp. 448. 2 [[worker]], var.
Formica intermedia,.Zett. Ins. Lapp. 448. 2 [[worker]], var.
Formica atra, Zett. Ins. Lapp. 450. 7.
Hab. Britain; France; Germany; Austria; Switzerland; Northern Europe; Siberia; Arctic America.