60 STUDIES IN AUSTRALIAN ENTOMOLOGY, 



posed to be confined. In all the species the anterior tarsi are 

 nearly similar in both sexes, and without spongiose tissue on the 

 lower side. 



Percosoma montanum, Casteln. 



Meocdema montanum, Casteln., I.e. p. 163. 



Percosoma montanum, Putz., Ann. Mus. Civ. Genov. 1873, iv. 

 p. 316. 



Form narrow, elongate. Black, shining. Head not large, 

 smooth ; a broad transverse impression behind the eyes, hardly at 

 all marked across the vertex ; frontal impressions light, short ; 

 eyes prominent, inclosed behind, projecting beyond post-ocular 

 prominences, — these not strong. Antennae subfiliform, not taper- 

 ing. Prothorax not convex, narrow, cordate, about as long as 

 broad (5x5;^ mm.), truncate in front and behind; sides lightly 

 rounded on anterior half, gently narrowed, but not sinuate, 

 towards base, lateral border narrow, extending from anterior to 

 basal angles, — thesu slightly obtuse ; median line lightly marked ; 

 a single marginal puncture on each side, placed at about half the 

 length, just before the sides begin to narrow. Elytra convex, 

 oval, narrow (11 J x 6^ mm.), very lightly striate (the striae hardly 

 visible to the naked eye) ; shoulders rounded ; base declivous to 

 peduncle, apex broadly rounded ; lateral border narrow, reaching 

 from peduncle to apex ; a row of round punctures a little within 

 the margins, these more closely placed towards apex. A single 

 puncture on each side of anus in both sexes. 



Length 21, breadth 6^ mm. 



jj. — With anterior thighs not canaliculate below, dilatate in 

 middle, with strong obtusely pointed triangular projection on 

 lower side. 



g. — With anterior thighs lightly canaliculate below, dilatate in 

 middle, the outer edge of the channel on lower side slightly 

 produced. 



Hah. — Victoria ; Yarragon, Gippsland (Sloane), Dandenong 

 Ranges (French). 



I have no doubt this is P. montanum, Casteln. M. Putzeys 

 in his remarks on de Castelnau's specimens of this species says of 



