233 
Habitaculum ovale, coriaceum, extus ramulis nullis obtectum, ca- 
rinis autem sex longitudinalibus elevatis ; basi et apice tenuibus 
haud carinatis. 
Hab. in Australia (D. Stephenson). In Mus. D. W. W. Saunders. 
The male of this species agrees with that of O. Hiibneri in the 
beautiful hyaline texture of the wings, almost destitute of scales or 
hairs (except along the costa and anal area, which are black), but the 
black antennz, as well as the remarkable structure of the case of the 
larva, at once remove it from that species, with which it moreover 
almost precisely agrees in the veining of the wings, except along the 
costal portion of the hind ones, in which the veins are more irregular. 
The antenne consist of about forty-two joints, which are bipec- 
tinated, except the two at the base and the apical one. The anterior 
tibiee are not furnished with the elongated spur at the base (a cha- 
racter which also occurs in O. Hiibneri), the hind pair of legs are 
short and proportionately thicker than the fore ones. 
The curious construction of the leather-like case, destitute of twigs 
or leaves on the outside, will not fail to attract notice: its formation 
must exhibit a curious modification of instinct. 
The second and three following abdominal segments of the male 
pupa have the hinder margin furnished on the back with a row of 
fine short recurved bristles, and the sixth, seventh and eighth seg- 
ments have a strong row of spines at the base of each, across the back ; 
the third, fourth, fifth and sixth segments moreover have a pair of 
large oval impressions on each on the under side, representing the 
pro-legs. 
In addition to the preceding Australian species of this curious 
group, I have figured the cases of three other species from New 
Holland, of which the perfect insects have not hitherto been observed. 
Two of these were brought home by Mr. Stephenson, and are in 
the collection of Mr. Saunders, whilst the third is in my own 
collection. 
The first of these cases (Pl. XXXIV. fig. 5) is of considerable size 
and covered externally with large pieces of leaves cut somewhat irre- 
gularly, but mostly of an oblong form, attached by one end only, the 
remainder being free. Within this case I found some fragments of 
the cast skin of the larva, the head being strongly maculated with 
black spots more or less confluent ; six of these are arranged in pairs 
upon the triangular space above the labrum. The thoracic segments 
were much less strongly spotted. The case also contained a female 
pupa of an elongate-ovate form, much larger than that of O. Hiibneri, 
having the dorsal surface of the thoracic segments keeled, and that 
of the middle segments of the body but slightly wrinkled, and the 
hinder ones smooth. It is of a chestnut colour, the hind part of the 
abdominal segments with a ring of black. The third and three 
following segments of the abdomen with a row of very fine recurved 
hooklets at the extremity of the upper surface, the sixth and seventh 
rather rugose at the base, and the eighth with a row of small spines 
at the base. 
