neio Ants from Australia. 433 



^rmidarinfi Weir, W.A. [Clark, no. 112). 



Type W. C. C. coll. 



Pilosula group, and differs from pilosula principally in 

 colour of niandiljlcs and antcniue, and thinner and longer 

 mandibles, narrower occiput, and in the shape of the thorax 

 and nodes. The ? pupa measures ll'O nun. 



Phyracaces clahki, sp. n. 

 Lenojth G"5 mm. 



Uniform dark castaneous, with some indistinct dark 

 smudj^es on second segment of gaster. 



External border of mandibles concave. Head slightly 

 broader than long, broadest at eyes, narrowest in front, 

 occipital border concave with somewhat sharp lateral angles. 

 Frontal carinse similar to those of singularis as described by 

 Forel, the narrow posterior prolongation reaching to beyond 

 the middle of the eyes, which are prominent and situated 

 slightly behind the middle of sides of head. Carinee of 

 cheeks prominent, the posterior portion concave, the 

 anterior portion convex, terminating at the side in a tooth- 

 like angle. The carina is bordered by a ridge which, seen 

 from the side, forms a rectangular enclosure not quite 

 touching the base of the mandibles and then almost eom- 

 ])letely encircling the eye. A ridge also commences below 

 tlie base of the mandible, and forms the lateral and posterior 

 bfU'der of the head. The sca[)es do not quite reach the 

 })osterior third of head, the terminal joint of funiculus 

 equals the preceding two. All joints, except the second 

 and the last two, are as broad as, or broader than, long. 



Thorax narrower than head, not quite twice as long as broad 

 at pronotum. where it is a fraction broader than at epiuotum. 

 Pronotum broader than long, broadest just behind the 

 shoulders which arc sharj)ly angled ; the anterior border 

 straight, the posterior concave, limited by a suture which in 

 si»me specimens is quite distinct, in others only indicated ; 

 mesonotum broader than long, bounded behind by traces of 

 a sutuie which is practically straight. Base of epinotum 

 similarly shaped to pronotum but inverted, and is broadest 

 at the extreme border instead of just in front. Declivity of 

 epinotum broad, concave from top to bottom and slightly 

 convex from side to side, as long as, or a fraction longer 

 than, the base, a sharp carina dividing the two. Lateral 

 and anterior borders of pronotum, and lateral borders of 

 epinotum, with a sharp carina. Petiole once and a half as 

 broad as long, broader behind than in front (in sinyularis the 

 node is broader in front), widely concave in front, its sharply 

 marginate sides produced into broad flat teeth behind ; 



