366 Mr. F.P. Pascoe on some new Australian Longicornia. 
raised lines, the interstices rather finely punctured; antenne rather 
more than half the length of the body, the first four joints rather hairy. 
Length 5 lines. 
Nearly allied to Z. Poweri, but with the head and prothorax more 
strongly punctured, the latter broader at the apex, and entirely 
black, the elytra paler, the lines and punctures less decided, and the 
whole less hairy. Both species have very much the look of some 
varieties of Pteroplatus variabilis ; and the antenne are very similar 
and remarkable, inasmuch as the third joint is nearly as large as the 
scape. I have treated of its affinities below. 
CHAODALIS. 
Caput antice productum, pone oculos constrictum, tuberibus antenniferis 
validis, brevibus, extus protuberantibus. Ocwli renifermes, tenuiter 
granulati. Palpi lineares, obtusi. Labrum breve. Antenne brevius- 
cule, compress ; scapo et articulis quinque sequentibus (secundo ex- 
cepto) subzequalibus, triangularibus ; caeteris angustioribus. Prothorax 
antice constrictus, disco inzequalis, lateraliter angulato-dentatus. Elytra 
prothorace multo latiora, fere parallela vel postice paulo dilatata, sutura 
divaricata, lineis elevatis instructa. Pedes modice elongati; femora 
vix incrassata; tibie apice attenuate; tars? graciles, preesertim postici. 
Coxe antics exsertee. -Acetabula antica breviter et late angulata. Pro- 
et meso-sterna depressa. 
I am indebted for my specimen of this most interesting insect to 
William Macleay, Esq., of Sydney, whose kindness I have so often 
had occasion to acknowledge. It is closely allied to Hroschema, differ- 
ing chiefly in the prolonged muzzle, the prominent antennary tubers, 
causing a deep concavity between as well as below them, and the 
dehiscent elytra. The legs, particularly the tibis, are also larger 
and much more attenuated; the anterior coxe more exserted, and 
their acetabula more vertical and less angulated. The position of 
Eroschema (and of Chaodalis) is a dubious one. M. James Thomson 
in his ‘ Essai,’ placed it with the “ Lepturite,” in a division which 
he called Pseudolepturite vere; but in his later work, ‘Systema 
Cerambycidarum,’ he has removed this division to the ‘‘ Ceramby- 
cite,” placing it in his group “ Callichromite vere.’ In the first 
instance it came very near Stenoderus and its allies ; now they are 
widely separated. I cannot help thinking that its first position was 
the most natural, and that its true place is near Stenoderus, and not 
with Pseudoleptura, Disidema, &c., notwithstanding the prolonga- 
tion of the external maxillary lobe, a character which appears to me 
in this case to be over-valued. Originally I doubtfully referred it to 
the vicinity of Péteroplatus ; but this was certainly erroneous. The 
