AND THEIR TBANSPORMATIONS. 9 



The upper surface of the superior wings of both sexes, is silvery-grey ; the anterior margin and a transverse band close to 

 the exterior margin, silvery-white; beyond this latter is a faint macular hazel band, fringed outwardly with grey. The centre 

 of the wing contains a kidney-shaped dusky stigma. The whole upper surface of the insect is very lustrous. 



Posterior wings and abdomen bro-\vn, merging into silvery-white at the outer margins, which are fringed ; thorax, head, 

 and antennas, silvery- white. 



The under side is throughout of a dusky hue, bordered with white. 



In the representation of this species, the caterpillar is shewn in search of food. 



SPECIES 2.— CRYPTOPHASA IMMAOULATA.— (Plate III.) 



The habits and metamorphoses of this chaste Uttle species, and of the two succeeding ones, the C. bi-pvmctata and C. spilo- 

 nota, are very similar to those just described of the C. albocosta, and, therefore, it will be only incumbent upon us to notice 

 such characteristics as to render the specific distinctions apparent. 



The larva! of C. immaculata are very abundant, and readily met with on the Banksi:c at all seasons of tlie year. In 

 length less than an inch, they ai'c of a creamy-white color, with four dorsal black macular marks on each segment, with the 

 exception of the first three, the anterior one of which is squamose, encircled by a row of black dots ; the two others contain tii- 

 angijlar black patches. Head shining brown. 



The Chrysalis (fig. 1) is light-brown, elongated, sharp and pointed towards the head, A^■hieh is destitute of .spines ; and in 

 length rather more than ^ an inch. 



Om- perfect insects wore produced at the latter end of October, the male measuring from tip to tip of wings nearly 1 inch, 

 the female tV larger. 



' The Antennee ...male (fig. 2) with tufts of ciliations beneath, female setaceous. 



The Labial palpi (fig. 3), terminal joint thin and pointed, 2nd stout, and about equal in 

 length, basal small; the whole curving upwards to about the top of the 

 head and covered by scales. 



The icjrs, anterior pairs (fig. 4) small, 2nd pairs larger, with 2 apical spm-s on 



tibia; ; posterior pairs (fig. 5) long and stout, tibia; hairy, with 4 spurs. 



The whole insect, above and below, is of a glossy silvery-white ; the costas and antenna;, 

 only, having a yellowish tinge. 



The female moth is seen in the drawing, with a sprig of the Banksia integrifolia out open in order to exhibit the cater- 

 pillar ; the scrcon-like covering is above, at the entrance to the cavity. 



SPECIES 3.— CRYPTOPHASA BI-PUNCTATA.— (Plate III.) 



The caterpillar of the C. bi-punctata is the only one of this genus we have as yet obtained, whose body is of that uniform 

 pale tint which usually characterizes the majority of those of the lepidopterous lignivora. It may be more minutely defined as 

 being of a ereamy-white throughout, with a slight pinkish dorsal line ; the 1st segment yellowish and horny, the ultimate one 

 and the head reddish. At maturity it attains to the length of 1^ to 2 inches. 



We collected our larvoe in August : early in the following month they changed to chrysalids, which were in length from 

 f to 1 inch, light shining brown, with anterior portion destitute of spines. 



The perfect insects having remained about 6 weeks in the pupa state, were on the wing in the latter week of October, and 

 measured in expanse from Vi to 2i inches, according to sex, although we have occasionally obtained specimens of the female 

 moth fully \ inch larger. 



' TIiu niai>'nified portioii.s of the porlect insect having been omitted in the ilhistration are liere inserted. 



C 



