21. Formica umbrata ^HNS. Pl. III. fig. 11. B.M.

Formica umbrata ^HNS, Nyl. Addit. Mon. Form. Bor. Eur. 1048; Form. Fr. et d'Alger. 70. 29.

Smith, Append, Cat. Brit. Hym. 116; Brit. Form. 106. 6.

Foerst. Hym. Stud. Form. 39. 18.

Schenck, Beschr. Nass. Ameis. 59.

Mayr. Form. Austr. 93. 25; Ungar. Ameis. 14. 25.

Formica mixta, Foerst ^HNS. Hym. Stud. Form. 41 & 72.

Hab. Britain; France; Germany; Austria; Hungary; Finland; Sweden.