Australian and I'asmanian Goleopfcra. 163 



than nintli and tenth combined. Protliurar about as lontf as 

 wide, widest at apical third, thence strongly narrowed to apex 

 and moderately to base, base slightly wider than apex ; with 

 three small foveae near base, one in the middle and one on each 

 side; punctures as on head. Elytra slightly wider than long, 

 with a distinct sutural stria, and each side of base with remnant 

 of a discal one ; Avith numerous distinct punctures. Ahdoiiieii 

 distinctly longer than elytra; under surface with a feeble 

 median impression ; fourth segment incurved to middle, fifth 

 very strongly incurved to and scarcely traceable across middle. 

 MetaHernum strongly impressed in middle apex. Leys rather 

 long and thin ; tibiae feebly bisinuate on lower surface, front 

 pair obtusely mucronate at apex. Length 2^ mm. 



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

 rufoniger (H. W. Cox). 



The palpi are smaller than in other species of Tyromor-phus, 

 and the terminal joint is thinner, but as in other respects it 

 agrees with the genus, and I have but a single specimen under 

 examination, it does not appear desirable to propose a new 

 genus for its reception. The club of the antennae, however, 

 is very different to that of any other described species. From 

 the side the base of each antenna appears to be set beneath a 

 curved spine. The head and prothorax are subopaque. 



Articerus. 



All the species of this genus occur in ants or termites' nests, 

 generally but few specimens occur in individual nests, but those 

 of several species of ants are seldom without them. Two 

 species breviceps, King and regius King,i were overlooked by 

 Schaufuss and Raffray ; also sharpi Masters, a name used to re- 

 place tumidus Sharp, tumidus having been previously used by 

 Westwood, but the species described by both Westwood and 

 Sharp under the name tumidus appear to be identical. 



Articerus cultripes, Raffr. 



Occurs in nests of Iridomyrmex rufoniger and of a species of 

 Colohopsis. 



1 Trans. Etit. Soc. N.S. Wales, vol. ii., pp. 5.5-56. 



