Australian and Tasmanian Coleopte.ra. 173 



close to nif/dicolh'x, but head not lon<j:itudinalIy foveate, an- 

 tennae hardly more than once and one-half the length of the 

 head^^ prothorax not very shiny, with a large shallow circular 

 fovea, certainly not ■" transversini late iuipressus . . . fovea 

 antebasali uiinuta," and without a basal carina. Other 

 characters of the nietastemum and abdomen with which the 

 specimens disagree are probably sexual. 



The head from certain directions appears to be supplied with 

 a very narrow, shining, median carina. The prothorax wider 

 at the base than near apex, and with different punctures to 

 those on head are very distinctive feattires. 



Articerus fenioraJix, n.sp. (Fig. 41.) 



3 ■ Colour and clothing much as in raffrayi. 



Head wide, flat and densely punctate ; with a very feeble 

 but somewhat shining median depression. Antennae slightly 

 longer than head, rather thin but gently increasing in width to 

 apex, which is circular in outline. Prothnrac not much wider 

 than long, front angles rounded, basal two-thirds parallel-sided ; 

 with a fairly large medio-basal impression ; punctures as on 

 head. Elytra with fairly dense punctures, becoming denser 

 at base ; sutural stria distinct. Abdomen with basal fovea large 

 and deep, its hind margin semicircularly encroaching on the 

 second segment, the semicircle bounded on each side by a dis- 

 tinct, but small tubercle, itself being the apex of a feeble 

 oblique sublateral ridge ; under surface largely excavated but 

 not foveate. Metasternum ridged along middle, with two small 

 apical teeth. Femora stout, hind pair with a strong triangular 

 subapical tooth ; tibiae inflated. Length 1|- mm. 



?• Differs in having the under surface of abdomen and the 

 metasternum on an almost even plane, with the latter not 

 armed at apex, and the femora unarmed. 



Hab. — N.S. Wales : Sydney, in nest of Iridomyrmex 

 rufoniger (H. W. Cox), in nest of a small ant" (E. W. Ferguson). 



1 Altlion;,'h HafTray descriljes the antennae as twice as long; as head, he does not so figure 

 them, the proportions Ijeing as 8.4 to 13 millimetres. 



2 Perhaps /. rufoaigi'r, but the specimen sent by Dr. Ferjjuson is sery pale and some- 

 what distorted. 



