32 Notes on Australian Coleoptera. 
extends over the whole -of the latter segments, with the 
exception of the two last, which are of a ‘brown, becoming 
yellow on the ultimate. The antennee are obscure after the 
fifth article. Mr. Howitt stated that he had taken this 
Megacephala under dry cow dung. 
Of Tetracha, the only species I have to mention is the one 
found by Mr. Waterhouse in the centre of the Continent © 
(at 700 miles N.W. of Adelaide), and is, I believe, hitherto 
undescribed, although that gentlemen has sent a consider- 
able number to Engen. I propose to give it the name of 
its discoverer. 
Tetracha Ve: length 10’, breadth 4’; of a light 
ereen metallic colour, with the buceal parts, the antennee, 
legs and ultimate seoments of the abdomen of a yellowish 
brown ; head broad with two sulcated impressions between 
_ the eyes; thorax a little broader in front than towards its 
posterior part, with a suleated and longitudinal line in the 
middle, and a transverse one at each end; elytra of a green 
colour, becoming bright and gilt near the suture; their 
posterior part is covered by a large apical yellow spot, 
terminating forward by an arched line ; the surface of the 
green part of the elytra is very rugose, and presents a 
longitudinal line of deep punctures following the suture at a 
short distance. 
It is with much pleasure I dedicate this handsome insect 
to F. G. Waterhouse, Esq., of Adelaide, whose labours have 
thrown so much light on the zoology of Southern Australia, 
This species carries up to five the number of the Aus- 
tralian species of Tetracha, which are the following :— 
1. T. Australasie.—Hope, “ Trans. Ent. Soe. of London.” 
Vol. IV. 
2. T. Humeralis.—MacLeay, junr., “Trans. Ent. Soc. of 
Sydney,” Part I. From Port Denison and Rockhampton. 
T. Scapularis.—-MacLeay, Junr., id. From Port Deni- 
son. 
4. T. Crucigera.—MacLeay, junr., id. From | Port Deni- 
son and Rockhampton. 
Mr. Macleay, junr., says that these three sorts are pro- 
bably nocturnal. I quite agree with him, having always 
found that such is the case with all the brown “coloured | 
species of the genus (on which Baron Chaudoir had formed 
his genus Phwoxanthus), of which I have taken numerous 
specimens of almost all the sorts known, during the 
night, on the banks of the Amazonas, Tocantins, Arra- 
