4 HYMENOPTERA. 



linidfe ; and Dr. Nylander discovered in the nests of this species 

 the Tinea ochracella, iu Finland. 



3. Formica truncicola. B.M. 



Formica truncicola, Nyl. Adno. Mon. Form. Bor. 907; Form. Fr. 

 et d' Alger. 62. 



Schenck, Beschr. Nass. Ameis. 33. 



Mayr. Form. Austr. 62. 11 ; Ungar. Ameis. 10. 11. 



Hab. Germany ; Austria ; Switzerland ; Hungary ; Italy ; Lap- 

 land; Finland; Denmark. 



4. Formica truncorum. 



Formica truncorum, Fabr. Syst. Piez. 403. 31 ? . 

 Formica truncicola, Nylander $ ? 



Hab. Mora\aa. 



5. Formica SANGUiNEA. PL III. fig. 10. B.M. 



Formica sanguinea, Latr. Hist. Nat. Fourm. 150. pi. 5. f . 29 ^ . 



Jurine, Hytn. 272. 



St. Farg. Hym. i. 203. 4 <? ? ^ . 



Foerst. Hym. Stud. Form. 20. G. 



Schenck, Beschr. Nass. Ameis. 36. 



Smith, Brit. Form. 101. 2. 



Mayr. Form. Austr. 64. 12; Ungar. Ameis. 10. 12. 



Nyl. Form. Fr. et d' Alger. 62. 16. 

 Formica dominula, Nyl. Adno. Mon. Form. Bor. 905. 6. 



Hab. Britain; France; Germany; Austria; Hungary; Italy; 

 Finland ; Arctic America. 



This is the only species of the genus Formica which plunders 

 the nests of other species of their young brood in the pupa state, 

 which they bring up as slaves to their own community. The 

 species is not uncommon in Hampshire, where it attacks the nests 

 of F. fusca and F. cunicularia ; in its nests have also been ob- 

 served numerous individuals of the yellow ant, F. Jlava ; it does 

 not raise nests similar to the wood-ant, but belongs to the 

 division of mining ants. 



6. Formica exsecta. PI. III. figs. 18-21. B.M. 



Formica exsecta, Nyl. Adno. Mon. Form. Bor. 909. 9; Form. Fr. 

 et d' Alger. 63. 17. 



Foerst. Hym. Stud. Form. 23. 8. 



Schenck, Beschr. Nass. Ameis. 38. 



Mayr. Form. Austr. 68. 14 ; Ungar. Ameis. 10. 14. 



Hab. France; Germany; Austria; Finland; Lapland; Hungary. 



