162 HYMENOPTERA. 



be observed that in many instances only one sex has been ex- 

 amined, and frequently only single examples ; we have therefore 

 included in the present genus all those forms which appear 

 to have a close relationship to the type, Formica barbara of 

 Linnaeus. 



Species of Europe. Sp. 1-4. 



1. ATTA BARBARA. B.M. 



Formica barbara, Linn. Syst. Nat. i. 962. 2 $ (var.). 



Fabr. Syst. Ent. 393. 11 ; Ent. Syst. ii. 356.26; Syst. Piez. 

 403. 30. 



Oliv. Encycl. Meth. vi. 495. 23. 



Latr. Hist. Nat. Fourm. 262. 

 Formica binodis, Fabr. Syst. Piez. 405. 39. 



Oliv. Encycl. Meth. vi. 496. 2/. 



Latr. Hist. Nat. Fourm. 285. 

 Formica juvenilis, Fabr. Syst. Piez. 405. 38. 

 Myrmica capitata, Losana, Form. Piem. 325. 



Nyl. Form. Fr. et d'Alger. 83. 9. 



Formica capitata, Latr. Hist. Nat. Fourm. 234. pi. 10. f. 66. 

 Atta capitata, St. Farg. Hym. i. 173. 1. 



Lucas, Explo. Sc. de VAlger. iii. 300. 329. 



Mayr. Form. Austr. 190. 2; Ungar. Ameis. 21. 1. 



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

 Sardinia; Sicily. 



2. ATTA STRUCTOR. B.M. 



Formica structor, Latr. Hist. Nat. Fourm. 236. 

 Formica lapidum, Fabr. Syst. Piez. 407. 49 $ . 

 Formica rufitarsis, Fabr. Syst. Piez. 406. 45 ? . 

 Atta structor, St. Faro. Hym. i. 174. 2. 



Schenck, Beschr. Nass. Ameis. 113. 



Mayr. Form. Austr. 192. 3 ; Ungar. Ameis. 22. 2. 

 Formica sedificans, Schill. Bemerk. ub. die in Schles. 56. 

 Myrmica mutica, Nyl. Addit. Alt. Adno. Mon. Form. Bor. Eur. 

 39. 6; Form. Fr. et d'Alger. 85. 10. 



Hab. France ; Germany ; Austria ; Hungary ; Dalmatia ; 

 Switzerland; Italy. 



3. ATTA SUBTERRANEA. B.M. 



Formica subterranea, Latr. Hist. Nat. Fourm. 219. pi. 10. f. 64. 

 pi. ll.f. 70. 



Schill. Bemerk. ub. die in Schles. 55. 



