254 Rey. H. Clark on new Australian Phytophaga. 
portion to the elytra, and rather more quadrate. The species has 
been taken by M. Damel in New South Wales; and is in the cabinets 
of the Rey. T. A. Marshall, Mr. Baly, and the Rev. H. Clark. 
4, M. ruficollis, n. sp. 
M. oblongus, sat parallelus, robustus, punctato-striatus, viridi-zeneus ; 
capite impunctato, ad medium foveolato, rufo; thorace subquadrato, 
antice constricto et rotundato, lateribus in gad medium rotundato-an- 
gulatis, tenuiter marginatis, disco subtilissime punctato rufo opaco; 
scutello semicirculari, levi, rufo; elytris thorace paulo latioribus, pa- 
rallelis, punctato-striatis, punctis sat magnis et distinctis, ad apicem et 
in 2 juxta humeros fusco vel rufo-fusco adumbratis ; corpore subtus 
rufo (abdomine fusco) ; pedibus antennisque pallide rufis, harum arti- 
culis ultimis rufis. 
Long. corp. 3 lin., lat. 13 lin. 
Although very distinct in coloration from the preceding species, yet 
the almost complete similarity in general form would suggest that the 
species before us might be merely a modified pattern of M. rufus, differ- 
ing from it in colour only ; a more careful examination, however, will 
give clear marks of separation: when M. ruficollis and M. rufus are 
viewed sideways, it will be seen that the line of the margination of the 
thorax is in M. rufus curved, rising upwards towards the humeral 
angles, while in WM. ru/ficollis (the species before us) this line of mar- 
gination is straight bothin Qand $. From M. nigro-cyaneus it may 
also be separated by its generally smaller size. 
This species was also taken by Damel in New South Wales, and is 
in the cabinets of Mr. Baly, the Rev. 'T. A. Marshall, and the Rev. 
H. Clark. 
5, M,. simplex, n. sp. 
M. ovalis, parallelus, punctato-striatus, rufo-niger, nitidus; capite inter 
oculos foveolato, impunctato ; thorace transverso, lateribus rotundatis 
et tenuiter marginatis, disco subtilissime et squaliter punctato; scu- 
tello subcordiformi, leevi; elytris parallelis, ad apicem rotundatis, punc- 
tato-striatis (punctis distinctis, seequalibus) ; corpore subtus rufo-fusco, 
abdominis seem. ultimo rufo ; pedibus flavis, genibus tibiarumque apici- 
bus fuscis ; antennis fuscis, art. 1-4tum flavis. 
Long. corp. 3 lin., lat. 13 lin. 
I have little doubt that this species together with M. flavus of 
this paper will hereafter constitute a new genus. The facies of the 
insects are manifestly different from that of Rhyparida on the one 
hand, and also (but less sensibly so) of Marseus: there is a breadth 
of thorax which gives a parallel form tothe species, separating them 
somewhat from the previous species of this-group, and also from the 
