262 NORTHERN ZOOLOGY. 



CLV. Genus FORMICA. Linn. 



(302) 1 . * Formica semipunctata. Semi punctured Formica. 



F. ( semipunctata J nitjra, glabra ; abdomine pube.scente, ■punctata ; segmentis apice membranaceis rufescenlibus, intermediis basi 



Itevibus. 

 Sernipunctured Formica, black, naked ; abdomen downy, punctured ; segments membranous at the apex and reddish ; the 



intermediate ones impunctured at tbe base. 



Length of the body 7f lines. 



Several taken in the Journey from New York to Cumberland-house. 



DESCRIPTION. 



Body black, glossy. Head something wider than the trunk, subtriangular : antennas piceous 

 with the scape black ; wings cast in all the specimens ; 9 scale vertical between the trunk and abdo- 

 men, sloping to a thin edge upwards, where it is very slightly cmarginate : abdomen oblong, subey- 

 hndrical, minutely punctured with the punctures piliforous ; hairs decumbent with those of the 

 margin of the segments and the anus, longer; margin of both abdominal and ventral segments 

 membranous, membrane reddish ; base of the three intermediate segments not punctured. 



This species a good deal resembles the Formica herculanea of Linne (F. ligniperda Latr.) but 

 it is proportionably more narrow, and entirely black save the legs and upper portion of the antennas. 

 I at first took it for a variety of F. pubescens of Latreille, 1 but in his description of that species, 

 he makes no mention of the punctures of the abdomen, nor of the rufescent membranous margin 

 of the abdominal segments, circumstances also which distinguish it from F. pennsylvanica of De 

 Geer, and which, from the figure of that author, is evidently a much smaller insect. 2 



(863) 2. Formica fusca. (Linne.) Brown Formica. 



Formica fusca. Linn. Syst. Nat. ii, 963, 4, ; Fn. Suec. 1722. Fab. Ent. Syst. ii, 352, 11 ; Stjst. Piez. 399, 13. De 

 Geer Ins. ii, 1050, 1082, 3, t. xlii, / 12. Lat. Fourmis. 159, 35, t. vi, /. 32 ; N. Diet. D'H. Nat. xii. Article Four- 

 mis. Crust. Araclm. et Ins. ii, 312. Geoff. Ins. ii, 428, 5. De Geer Ins. ii, 1050, 1082, 3, t. xlii,/ 12. Mull. 

 Fn. Frid. 657 ; Linn. Nat. v, 913. Oliv. Encycl. vi, 433. Schrank. Enum. 833. Vill. Ent. iii, 334, 3. Berk. Syn. 

 i, 159. Ced. Fn. Ingr. 557. Walck. Fn. Paris, ii, 162, 7. Stew. Elem. ii, 248. Jur. Hymenopt. 272. Kirb. and Sp. 

 Introd. to Ent. ii, 02. Lam. An. sans Vertebr. iv, 9, 5. Steph. Cat. i, 357, 4840, 8. 



Formica media nigro colore splendeus Rai. Hist. Ins. 69. 



The small Black Ant. Gould. Ants, 2, 3. 



Formica flavipes. Fourc. Ent. Par. ii, 52. 



libera. Scop. Cam. 835? 



Fournis noir cendr£e. Hub. Fourm. 159, 35, t. vi, f. 32, a. 



Length of the body 14; line. 



One specimen taken in Lat. 65°. 



9 Introd. to Ent. i, 370. 

 1 Hist. Nat. de Fourmis. 96, t. i, /. 2, a, u. - Dc Geer, Ins. iii, 603, 4, r. xxxi, /. 9, 10. 



