414 
LEPIDOPT E r: A . 
provided with numerous minute clinging hooks. When they 
are about to change their forms, their cases serve them in- 
stead of cocoons ; they fasten them hy silken threads to 
the plant on which they live, stop up the holes in them, and 
then throw off their caterpillar-skins. The chrysalids are 
remarkably blunt at the hinder extremity, and are provided 
with transverse rows of minute teeth on the back of the ab- 
dominal rings. The moths, of which there are several kinds 
produced by these case-bearing caterpillars, differ very much 
from each other ; but, as they all agree in their habits and 
general appearance while in the caterpillar form, they are 
brought together in one family called Psycham, the Psy- 
cliians, from Psyche , a genus belonging to it. The Germans 
(jive these insects a more characteristic name, that of Sack- 
trciger* that is, sack-bearers, and Hiibner called them Cane- 
plwrce, or basket-carriers, because the cases of some of them 
are made of little sticks somewhat like a wicker basket. 
The cases of the insects belonging to the European genus 
Psyche are covered with small leaves, bits of grass or of 
sticks, placed lengthwise on them. The chrysalis of the 
male Psyche pushes itself half-way out of the case when 
about to set free the moth ; the female, on the contrary, 
never leaves its cocoon, is not provided with wings, and 
its an ten me and legs are very short. The male Psyche 
resembles somewhat the same sex of Orgyia, having pretty 
broad wings, and antennas that are doubly feathered on the 
under side ; it has also a bristle and hook to hold the wings 
together. The cases of Oilcedcus ,f another and much larger 
kind of sack-bearer, inhabiting the West Indies and Soutli 
America, are covered with pieces of leaves and of sticks 
arranged either longitudinally or transversely. The cases 
of some of the females measure four or five inches in length. 
Some which I received from Cuba were covered with little 
* See Germar's 11 Mngazin tier Entomologie,” Vol. I. p. 19. 
f This name ought to be CEcelicus. See Mr. Guilding’s description of tho 
insect in the “ Transactions of the Linnoean Society,” Vol. XV. 
