the Australian Longicornia. 569 



Genus Phaolus. 

 Caput breve, rotundatum. Oculi reniformes. Antenn(B 1 2-arti- 

 CLiIatae, inter oculos insertae, distantes, elongatse, subsetaceae, 

 articulo basali brevissimo, incrassato, tertio cseterisque, ultimo 

 excepto, subaequalibus. Palpi apice truncati. Prothorax 

 transversus, lateribus dentatis. Elytra brevia, subparallela. 

 Pedes breves, tarsorum articulo basali triangulari, Prosternum 

 postice truncatum, mesosterno depresso. 



The 12-jointed, subsetaceous antennse sufficiently characterize 

 this genus, which in most other respects is nearly allied to Pceci- 

 losoma metalHcum, Newm., which, however, is not a Poecilosoma, 

 as I have pointed out below. 



1. Phaolus Macleayi. (PI. XXIII. fig. 3.) 

 P. cupreo-violaceus ; palpis oculisque fuscis. 

 New South Wales. 



Rich copper, with violet reflections, especially on the head and 

 prothorax ; head very short in front, coarsely punctured, with a 

 deep impression on the vertex and between the eyes ; lip very 

 small, black ; antennte 12-jointed, subsetaceous, longer than the 

 body, distant at the base, inserted between the eyes, the basal 

 joint very short and thick, the third also somewhat thick, the rest, 

 except the last, about equal in length, the last shorter and rather 

 compressed, as well as the two or three preceding it ; prothorax 

 transverse, scarcely wider than the head, with scattered black 

 hairs, sparingly punctured, and somewhat corrugated, the side 

 with a moderate tooth towards the base ; scutellum rounded pos- 

 teriorly ; elytra glabrous, minutely punctured ; body beneath 

 violet, with a blackish pile. 



Length 6 lines. 



Genus Iotherium. 

 Caput breve. Oculi reniformes. Antennes 11-articulatse, dis- 

 tantes, breves, apicem versus crassiores, articulo basali 

 obconico, tertio cseteris longiori, tribus ultimis confertis. 

 Prothorax transversus, lateribus spinosis. Elytra ampla, sub- 

 parallela. Prosternum postice truncatum, mesosterno de- 

 presso. 

 The Poecilosoma melallicum cannot properly be referred to 

 Poecilosoma, as in that genus the sterna are constructed quite 

 differently, the mesosternum being elevated into a sharp keel, the 

 anterior part of which is received into a notch of the prosternum. 



