REMARKABLE LARV.E. 499 



entirely closes the aperture of the shell. The slight de- 

 velopment of the foot indicates the sedentary nature of 

 the animal, whose shell is firmly embedded among the 

 madrepores. The mantle which, in the ordinary condi- 

 tion, is closely applied against the walls of the shell, is 

 covered, like the entire surface of the body, with white 

 reticulated markings upon a rich deep chesnut-brown ; 

 while the thickened fleshy rim surrounding the foot is of 

 a delicate pink colour. 



In the woods of Tampassook, the larva of a butterfly 

 forms a curious spherical nest out of the pinnules of a 

 species of fern. It bends down the leaflets, and fixes 

 them ingeniously by a glutinous thread ; the grub, at the 

 time of its incarceration, feeding on the verdant walls of 

 the cavity. I have found another larva which inhabits the 

 pod of a species of leguminous plant, and which, having 

 consumed its contents, forms a cocoon in the empty siliqua. 

 Another remarkable larva, belonging to an Oiketicus, or 

 Psyche, of the Lepidopterous family, Arctiida, forms a very 

 remarkable case or tent out of small dry pieces of sticks 

 and leaves, and being thus protected, crawls about the sur- 

 face of the foliage, consuming the parenchymatous tissue. 

 One of these was marbled pale yellow and black on the 

 head and first three segments; the rest of the body straw- 

 coloured, with two rows of small black dots on each side 

 above the spiracles. The case was lined with a soft, loose, 

 cottony down, composed of minutely comminuted vege- 

 table fibre. 



The animal of M. Loven's genus, Cylichna, crawls very 

 slowly, moving by an almost imperceptible series of un- 



