BY H. J. CARTER. 83 



to prothorax, sharper anterior angles and black tibiae, inter alia. 

 Both in P. cyaneus and in P. ellipticus, the colour may be 

 coppery, green, or cyaneous, but is usually concolorous and vari- 

 able in size. I have specimens of P. cyaneus Pasc.,(a common 

 Queensland insect) from 13 x 7 to 16 x 8J mm., from Rockhampton 

 and the Dawson River. 



Platyphanes punctipennis Cart. = Trisilus punctipennis Cart. — 

 This species must be removed from this genus, from its not 

 having striate-punctate elytra. Having recently identified Tri- 

 silus femoralis Haag, I consider that my species should be placed 

 under Trisilus. For distinction, the following differences may 

 be noted. In T. punctipennis, the form is less convex, anterior 

 angles of prothorax more advanced, femora more slender. The 

 prosternum and clypeus are short in both, but there is an evident, 

 though short, space between the procoxae and front margin of 

 the prosternum, though Haag-Rutenberg stated that they touched 

 this margin. 



Mitrrphorus, n.gen. 



Near Olisthcena, from which it differs in the following char- 

 acters. Antennae shorter and stouter, joint 3 scarcely longer 

 than 4, apical joints more enlarged, eleventh larger than the 

 rest, ovate. Head short and deeply received into the prothorax, 

 the eyes partly concealed, less widely separated (than in Olis- 

 thama): forehead subvertical. Prothorax very convex, sub- 

 truncate at apex, its anterior angles scarcely produced, obtuse 

 and defiexed; very narrowly bordered at sides and apex, without 

 any foliation or differentiation of disc to the border; sides little 

 narrowed at apex. Legs short; tibiae thin, glabrous, the middle 

 and hind tibiae slightly curved. 



MlTREPHORUS CONVEXICOLLIS, n.Sp. 



Elongate-ovate; whole surface above, beneath, and legs, nitid 

 black; tarsi and apical joints of antennae piceous-red. 



Head closely and distinctly punctate, epistoma rounded, labrum 

 not prominent, canthus little raised, parallel behind; suture 



