Mr. F. P. Pascoe on some new Australian Longicornia. 369 
legs and the dilated penultimate joint of the tarsi. These characters, 
the colour, and pubescence combine to give it an aspect sue generis. 
Exereta unicolor. (Pl. XVI. fig. 2.) 
E. omnino lutescens, sparse breviter pilosa. 
Hab. South Australia (Mr. Bathurst). 
Entirely pale luteous, with short, scattered, erect hairs, scarcely 
noticeable, except under a lens; head and prothorax very sparsely 
punctured, the punctures shallow and indefinitely impressed ; scutellum 
narrow, slightly pointed behind ; elytra coarsely and closely punctured, 
punctures in regular rows at the base and near the suture, but irregular 
and gradually becoming smaller posteriorly, the apex rounded ; body be- 
neath luteous, shining; antennz shorter than the body, slightly pilose. 
Length 5 lines. 
AQTHIORA. 
Characteres ut in Uracantho, sed scapo longiore, attenuato, articulis ceteris 
cylindricis; prothoracis lateribus rectis, haud angulatis. 
Besides these characters, the muzzle is longer and narrower than 
in Uracanthus ; but the habit is precisely similar. I find in this, as 
in many other cases, it would be impossible to formulate a sufficiently 
satisfactory diagnosis of Uracanthus or of other genera, if exceptional 
species, like this, were not removed. Nevertheless I think it would 
generally be desirable if some differences of habit also accompanied 
what are often only technical discrepancies. The type is 
Athiora fuliginea. 
Uracanthus fuligineus, Pascoe, ante, p. 238. 
LycEsIs. 
Characteres ut in Bebio, sed antennarum articulus tertius quam scapus 
haud brevior, ceteris brevioribus et sequalibus, fere cylindricis; elytra 
latiora; pedes mediocres ; tibiis longioribus. 
Originally described by myself as a Didymocantha (Isalium), from 
which it differs principally in the long, narrow prothorax and the 
nearly cylindrical joints of the antenne. It is a weak and slender 
form, although much less slender than Bebiws. The type is 
Lygesis cylindricollis. 
Didymocantha cylindricollis, Pascoe, Trans. Ent. Soc. ser. 2, v. p. 18. 
BeEBIvs. 
Caput antice subelongatum ; tuberibus antenniferis brevibus, remotis. 
Oculi prominuli, reniformes, grosse granulati. Antenne breves, scapo 
