HYMENOPTERA. 145 



black ; the nodes of the petiole ferruginous ; the sculpture nearly 

 the same as in M. sanguined ; the mandibles are, however, longer, 

 more strongly toothed, and of a pale yellow colour ; the nodes of 

 the petiole are more elongate, and the petiole of the first node is 

 longer and more slender ; the insect is of a duller red than M. 

 sanguined ; the head sometimes fuscous-red. 



Hab. West Australia. 



6. MYRMECIA TARSATA. B.M. 



Worker. Length 8-9-J lines. Black : the mandibles, antennae 

 and tarsi pale reddish-yellow ; abdomen smooth and shining 

 black, with a greenish tint. Head longitudinally rugose ; the 

 prothorax with a divergent rugose striation, that on the meso- and 

 metathorax coarse and transverse ; on the first node of the petiole 

 it is longitudinal ; the three apical segments of the abdomen 

 pale rufo-testaceous. 



Hab. Australia (Hunter River, &c.). 



7. MYRMECIA RUFINODIS. B.M. 



Worker. Length 7 lines. Black : the antennae, mandibles, 

 tarsi and anterior tibiae, as well as the articulations of the 

 legs, ferruginous ; the nodes of the petiole bright ferruginous. 

 Head longitudinally rugose ; the striation on the thorax trans- 

 verse, that on the prothorax curving round the sides. The first 

 node of the petiole subrugose, the second smooth and shining ; 

 the margins of the apical segments of the abdomen pale testa- 

 ceous. 

 Hab. Adelaide. 



8. MYRMECIA MANDIBULARIS. B.M. 



Worker. Length 5 lines. Black and shining : head quadrate 

 and longitudinally striated ; mandibles straight, with a slight 

 bend at their base, of nearly equal width throughout, convex 

 above, flattened beneath, obliquely truncate, forming a bent tooth 

 at the apex; the inner edge with three or four teeth. Thorax : 

 the pro-, meso- and metathorax above, much more strongly 

 striated longitudinally than the head; the metathorax trans- 

 versely striated behind ; the apical joints of the tarsi ferruginous. 

 Abdomen : the first node of the petiole, viewed sideways, is 

 quadrate ; above, it is convex, widest behind, and coarsely ru- 

 gose ; the second node subglobose, and longitudinally and finely 

 striated, the abdomen densely clothed with ferruginous pu- 

 bescence. 

 Hab. Adelaide. 



