1874. 3 



Prosternum furnished with an elongate narrow post-coxal process, 

 which is extremely densely clothed with very long hairs. 



Mesosternum produced between the middle coxa?, these placed 

 closed to one another, and separated only by a thin lamina. 



Posterior coxa? broader externally than internally ; their upper 

 margin oblique in its direction, their outer and hinder angles acute. 



I have been so fortunate as to accumulate from different sources 

 nine individuals possessing the characters of the genus ; and, after 

 carefully examining them, have concluded that these individuals are 

 representatives of five different species ; it appears, moreover, to me 

 that none of these specimens can be referred to P. castanea, Hope, 

 the only species of the genus hitherto described ; I have, therefore, 

 drawn up descriptions of these insects, and, in order to make the paper 

 more complete, have copied and added to it the description of 

 P. castanea. 



These six species may be ai-ranged in two sections, readily dis- 

 tinguished by the structure of the labrum, and which (if connecting 

 links be not discovered) will, perhaps, ultimately be adopted as 



distinct genera. 



Section I. 



Lalrum prqfunde (sed haud usque ad clypei marginem) emarginatum. 



1. PACnTTEICHA MUNDA, Sp. n. 



Nigro-picea, supra nifida, infra dense pallide lanosa, elytris festaceis, 

 antennis 7'ufescentibus, protJiorace dense punctata ; tihiis iwsteriorihus in 

 utroq^ue sexu minus incrassatis. Long. corp. 14 lin. 



^ . tarsis anteriorihus, long. 6 lin. 



5 . tarsis anteriorihus, long. 3.^ lin. 



Head pitcliy-black, densclj' punctured. Thorax pitchy-black, phining, the sides 

 densely punctured, the punctures being confluent and rugose ; the front part is 

 closely punctured, the back part more sparingly and indistinctly punctured ; its 

 breadth is nearly one and a half times its length, it has no hairs on its ujiper surface : 

 scutcUum pitchy-black, indistinctly punctured. Elytra testaceous, smooth and 

 shining, without distinct punctuation. Pygidium pitchy, without hairs. Under- 

 side of the body quite woolly, being densely clothed witli palo, soft, long pubcseonco. 

 The last segment of the abdomen without pale hairs. Legs pitchy-black. 



This species has been sent from Swan River by Mr. Brewer. 



The two specimens of it before me differ from one another in 

 several respects, and some of these differences are no doubt sexual. 

 In the specimen which I believe to be the male, the legs are longer 

 than in the other, the difference being most notable in the front tarsi, 

 and the three teeth on the front tibia? are less developed. The 



