CRYPTOPHASA ALBACOSTA. 119 
such a manner that the larva can pass and repass at 
pleasure. After sunset it goes in search of food, which 
it conveys, a leaf at a time, to its dwelHng, where 
it is deposited by being dragged part down the cell. 
Thus the larva proceeds during the whole night, 
and on the approach of day retires with precipi- 
tation to its retreat, where it lies with its head 
towards the entrance, feeding on the leaves thus 
provided, and never ventures out during the day. 
In this retreat the larva also changes to a pupa in 
January, spinning no web, remaining in that state 
fourteen days, and the moth is on the w^ng in 
February. The pupa is figured at the bottom of 
the plate, in a section of its dwelling when in the 
larva state. The moth frequents the Casaurina, 
growing in barren forests. 
Mr. Lewin has described and figured the trans- 
formation of three other moths belonging to the 
same genus, and having the same habits, the cha- 
racters and peculiarities of which we shall here 
subjoin. 
C. ALBACOSTA. — Anterior wings silvery grey, the shoulder, 
thorax, and a broad margin on the anterior edge of a 
silvery white ; a row of angular yellowish-brown marks 
near the exterior margin, with a faint ear-like mark and 
a dusky dot in the middle of the wing. From the shoul- 
der runs an oblique cloud of chocolate dots or little 
tufts. Posterior wings broMTi, with a broad silvery white 
margin and fringe. Rather larger than C. irrorata; 
female expanding two inches and a quarter. Lewin, 
pi. 11. 
The larva resides on the Banksia serrata, in the 
