298 I'OTIMICID.K. 



inesouotum .siibe([ual in length, the t'oriiior moderately broad, 

 convex, the lultcr viewed I'roin the side somewhat cylindrical and 

 sloping backwards from the pro-mesonotal sntnre, this latter and 

 the nieso-metanotal suture distinct; nielanotum more or less 

 raised, convex and gibbous, obliquely truncate posteriorly ; legs 

 long, robust, the calcaria pectinate, the claws simple. Node of 

 the pedicel upright or slightl}'^ inclined forward ; abdomen short, 

 broadly oval, not produced anteriorly so as to overhang the 

 l)edicel. 



Key to the Specks. 



(I. Head viewed freni Ilu> front not emnrginale 

 j30stcriorly. 

 ii'. Thorax in prutile widely eniaririiiale at tlie 



meso-metanotal suture /. anccpi^, p. 298. 



h'. Thorax in profile not emarginate at the nieso- 

 metanotal suture : meso- and metanotuni 



level one with tlie other /. ijluber, p. 299. 



l>. Head viewed from the front A\i(lely emarginate 



posteriorly /. la;vi(/atns, p. 299. 



3r>S. Iridomyrniex anceps, Ro(jer (Formica), Berl. ent. Zeit. vii 

 (18(>]), p. 1G4, ^ ; Ford,' Jovr. Bomb. N. II. Hoc. ix (1895), 

 pp. 468 & 4G9, 9 . 



^ . Head, thorax and abdomen dark castaneous brown, with a 

 beautiful metallic refulgence in certain lights ; antennae very much 

 and legs slightly paler reddish brown. Pilosity very sparse, con- 

 lined to a few scattered pale hairs chiefly on the front of the head 

 and apex of tlie abdomen. Pubescence fine and sdky, tolerably 



V'vi. '.'<•. — Iriiloiiii/rnic.v aiici'p.<, ^. 



abundant, especially on the abdomen. Head with the mandibles 

 triangular, very much longer than broad, cheeks slightly convex ; 

 mandibles elongate, the masticatory and outer margins nearly 

 equal ; clypeus triangular, nearly flat, almost as high as broad ; 

 the fronti with a distinct but short vertical carina between the 

 ante.nnal carina) ; eyes placed laterally and a little forward, closer 

 to the top of the head than to the anterior margin. Thorax 

 elongate, narrow, the metanotum I'cmarkably raised and forming 



