148 HYMENOPTERA. 



le»s, and second node of the ))etiole, ferruginous. The head 

 longitudinally rugose, not striated ; the prothorax rugose, the 

 rugosit\' running in a transverse curved direction ; the meso- 

 and metathorax transversely rugose ; the first node of the pe- 

 duncle subglobose and coarsely rugose, the second node smooth 

 and shining, with a few scattered punctures; the abdomen smooth 

 and shining, the apical margins of the first and second segments 

 and the whole of the other segments ferruginous. 



Hab. Tasmania. 



15. Myrmecia sanguinea. 



Worker. Length 6-9 lines.— Blood-red ; the abdomen black ; 

 the head longitudinally rugose-striate, not coarsely so. The pro- 

 thorax with strife diverging from the centre, that on the meso- 

 and metathorax transverse ; a deep strangulation between the 

 meso- and metathorax ; the fii'st node of the petiole more or less 

 rugose, both blood-red. 



Hab. Tasmania. (Coll. F. Smith.) 



Genus 8. ECITON. 



Formica, pt., Fabr.Ent. Syst. ii. 364 (1793). 

 Mvrmecia, pt., Fubr. Syst. Piez. 423 (1804). 

 Eciton, Latr. Hist. Nat. Crust, et Ins. iv. 130 (1804). 

 Ancylognathus, Lund, Ann. Sc. Nat. xxii. (1831). 

 Camptognatha, Westw. Griff. An. Kivgd. xv. 5. 16 (1832). 



The maxillary palpi 2-jointed, the labial palpi 3-jointed. The 

 societies com])rise males, females and workers, the latter con- 

 sisting of two kinds of individuals, the larger kind in some spe- 

 cies having the mandibles elongate, curved, somewhat sickle- 

 shaped, but not flattened, the head very large ; the large and 

 small workers with very minute eyes, in some species obsolete. 

 Thorax unarmed. Abdomen small and ovate, the petiole with 

 two nodes ; the workers armed with a sting. — Males and females 

 not known. PI. VI. 



1. Eciton hamata. PI. VI. figs. 5, 6, 8. B.M. 



Formica hamata, Fabr. Ent. Syst. ii. 364. 58 (worker major). 



Lafr. Hist. Nat. Fourm. 242. pi. 8. f. 54. 

 Myrmecia hamata, Fahr. Syst. Piez. 425. 6. 

 Eciton hamata, Latr. Gen. Crust, et Ins. iv. 129. 



Smith, Trans. Ent. Soc. Loud. iii. new ser. 16. 1. 

 Formica curvidentata, Latr. Hist. Nat. Fourm. 269 (worker 

 minor). 



