229 
ad apicem bipectinatis ; alis subelongatis, hyalinis, venis luteis, 
nigro setosis, posticis subrotundatis, costa areaque nigro dense 
hirtis. 
Expans. alar. unc. 13. 
Larva obscura, capite segmentisque tribus anticis albidis, nigro 
punctatissimis, carinis lateralibus carnosis, propedibus dorsoque 
segmenti ultimi rufo-castaneis. 
Habitaculum extus subcoriaceum, ramulis numerosissimis tenuibus 
obsitum, his basi tantum adfixis apicibus liberis. 
Pupa maris elongata, nigra, nitida, segmentis abdominalibus 2, 
3, et 4 ante apicem apiceque 5ti serie transversali dorsali 
spinularum curvatarum, recurvarum instructis, 6to inermi, 7mo 
et 8vo ad basin serie transversa spinarum rigidarum postice 
directa instructis; tribus ultimis subcoalitis, apicali hamulis 
duobus minutis, recurvis terminato. 
Pupa femine obesa, nigra, nitida, segmentis 4 anticis carinatis, 
capite parvo, utringue ceratotheca brevi instructo, podothecis 
minutis, segmentis abdominalibus inermibus, apicali hamulis 
duobus minoribus recurvis terminato. 
Hab. in Nova Hollandia (D. Stephenson). In Mus. W. W. 
Saunders. 
In addition to the materials received by Mr. Saunders, I am for- 
tunately able to illustrate the history of this species by figures of the 
larva and its details, drawn by me twenty-six years since, and which 
have hitherto remained unpublished. In a case of this species, for- 
merly in the collection of Mr. Edwards, I found a very well preserved 
larva which supplied these figures. The larva itself is represented in 
Pl. XXXVI. fig. 10; itagrees in general form with that of O. Saun- 
dersii, but is at once distinguished by the great maculation of the head 
and thoracic segments, which, as well as the legs, are pale buff dotted 
with black; the longitudinal fleshy ridges at the sides of the body, 
the pro-legs, and the upper side of the terminal segment, red-brown ; 
the remainder of the body in the specimen examined had changed to 
a blackish colour. Figure lp represents the front view of the head, 
and fig. 1g the eyes and antenna of the left side, and the upper lip 
and mandibles in situ. The head of this larva was towards the 
slender free extremity of its case, showing that it had turned itself 
therein in order to prepare for assuming the pupa state, and con- 
sequently that it had arrived at its full size, and had then died. The 
case also agreed in size with those brought from Australia by Mr. Ste- 
phenson, from which the perfect insects had made their escape. There 
is scarcely any difference in size between the cases of the male and 
female larvee in this species. It will be observed that the case is 
covered with a vast number of very slender twigs, and these appear, 
from the different specimens brought home by Mr. Stephenson, to 
have been cut from different kinds of trees; hence it is evident that 
the species is not confined to a single tree ; it will be moreover seen 
that these twigs are arranged somewhat systematically, the base of 
those nearest the narrow extremity lying beneath those nearer the 
wider aperture or mouth, which are thus perceived to have been 
added subsequently, proving, in fact, that the case is increased gra- 
