BY THE REV. T. BLACKBURN. 1253 



narrower proportions, — no specimen that I have seen being shorter 

 than twice its width, as well as in the interior surface of the pro- 

 thoracic excavation in the male not being rugulosely punctulate. 

 Near Eucla, W. Australia ; taken by Mrs. Graham. 



Cavonus armatus, Shp. 9. 



Among a small batch of Cavonus armatiLS^ Shp., recently sent 

 to me by Mr. McDougall of Moonta were two females, which had 

 been dug up from the ground. This sex differs from the male in 

 the following characters ; — the club of the antennae is very much 

 smaller being shorter than the preceding joints taken together ; 

 the surface of the prothorax is quite even, that part which in the 

 male is excavated being very distinctly but not very closely punc- 

 tulate ; — the rest l^evigate or nearly so ; thepygidium is much less 

 abruptly declivous and less strongly fringed with hairs above. 



Phylliocephala, gen.nov. fCorynophyllo affinis). 



^. — Mentum sat angustum, elongatum, antice gradatim angus- 

 tatum (fere ut Corynophylli). Palpi labiales articulo ultimo sat 

 valido, obconico (quam Corynoiyhylli pauUo breviori). Maxillae 

 lobo superiore parvo (fere ut Cavoni). Palpi maxillares articulo 

 2° sat incrassato, articulo ultimo sat elongato fortius incrassato, 

 subovato (quam Cavoni Corynophillive multo magis incrassato). 

 Mandibulse hand prominentes. Labrum vix perspicuum. An- 

 tennae lO-articulatae, flabello elongato minus lato. Caput cornu 

 valido acuto instructum, ante oculos utrinque fortiter (quam 

 Cavoni Corynophyllive multo magis fortiter) dilatatum, antice 

 declivum. Prothorax (fere ut Cavoni) profunde excavatus 

 utrinque sat fortiter elevatus sed hand antice cornutus. Tibiae 

 anticae obtuse tridentatae ; posteriores sat graciles, apice truncatae 

 ciliataeque. Tarsi graciles, tibiis fere longiores. Stridulationis 

 organa nulla. 



^. Latet. 



The superficial resemblance of this genus to Cavonus is quite 

 remarkable, — so much so that when I first saw it I passed it over 



