228 HOMIEOSOMA SINUELLA. 



existence, the larva is, when at rest, short and very 

 thick, but it nearly doubles its length when crawling, 

 though the hinder part is still thick, and sometimes 

 very "baggy." Segments rather deeply divided, and 

 having transverse folds on the skin, the third and 

 fourth segments having each tivo of these folds, which 

 nearly meet at the back, and look like cross diagonal 

 lines, while the remaining body-segments have each 

 one fold in the middle. 



The colour is dull porcelain-white, with a faint 

 bluish tinge when full-grown, darker between the 

 segments ; the subdorsal lines and spiracles are indi- 

 cated by depressed dots. The head is deeply lobed, 

 light chestnut, the jaws brown, the dorsal plate pale 

 brown, dotted along its posterior margin with black, 

 the anal plate pale brown, the anterior feet black. 



Eating the inner substance of the root-stock of 

 Plantago lanceolata, living entirely in the cavity thus 

 formed, its presence is only slightly indicated by 

 the drooping heart leaves. By the winter, however, 

 although it seems still to eat a little from the walls of 

 its cavity, it has shrunk considerably, the obesity of 

 the posterior portion having quite disappeared. 



It is now short, thick, and very sluggish; dull white, 

 the third to the fifth segments rather more trans- 

 parent, the dorsal vessel visible, the head and dorsal 

 plate light brown, darker at the edges, the anal plate 

 and legs as before, and while in cocoon it only becomes 

 slightly yellowish. 



It varies excessively in the time of spinning this 

 cocoon — from September to March apparently, — and 

 the cocoon is not black at first, but from whitish 

 becomes brown, and finally sooty. 



The pupa is light chestnut, the dorsal region 

 paler. 



Dr. Hofmann, in his c Kleinschmetterlingsraupen,' 

 describes the larva of H. sinuella (from Treitschke 

 and Hiibner) thus : — " Light bark-brown, with white 

 longitudinal stripes ; head brown spotted with black ; 



