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.