168 Arthur M. Lea: 



once and one-third as wide as long, sides very feebly diminish- 

 ing in width from apex to base, with a shallow, longitudinal 

 medio-basal impression, punctures as on head. Elytra with 

 dense punctures, rather sparser on disc than elsewhere : sutural 

 stria feeble. Abdomen with a large transverse basal fovea, 

 somewhat produced on each side, each side with a feeljly ele- 

 vated oblique ridge ; under surface somewhat excavated. 

 Metasterintm flattened along middle, but with a small apical 

 tooth. Femora stout, the middle pair especially ; middle tro- 

 chanters each produced into the form of a strong curved tooth, 

 about half the length of the femur ; tibiae short, middle pair 

 strongly inflated, front pair mucronate at apex. Length 1^- mm. 



Hah. — Victoria : Birchip, two males from an ants" nest (J. 

 C. Goudie). 



Rather smaller than curvicornis, antennae wider, etc. In 

 many respects close to the description of iJascoeus, but with the 

 prothorax decidedly transverse instead of '' quite as long as 

 broad." The middle legs are much as in the description of 

 tumidus, but Sharp describes the prothorax of that species as 

 " about as long as broad '' ; its metasternum is also not ciliated 

 in the middle, but shining and with a small apical process. 

 The abdominal fovea is also large instead of small. From the 

 species identified as Jireripex it differs in being less compact, in 

 the antennae being less flattened, the elytral clothing longer 

 and the abdominal fovea not quite the same. It comes very 

 close to the description and figure of setipes, but has a distinct 

 sutural stria, whereas that species is twice stated to be without 

 such, and is also so figured. Tlie length also is much less than 

 a line. The antennae from the sides are as in the preceding 

 species but from above they are seen to be longer and thinner, 

 with the greater length due principally to a longer basal stem. 



Arficerus irregularis, n.sp. (Figs. 36, '57.) 



3^- Colour and clothing as descril)ed in raffrai/i, except that 

 the abdomen has fine depressed setae in addition to the erect 

 ones, and that the basal fascicles are less conspicuous. 



Head rather short and flat, with a scarcely traceable median 

 impression. Antennae short wide and flat, base nan-ow, then 



