1879.] Ibl 



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 hvo 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. Colour dull porcelain-white, with a faint bluish tinge when 

 full grown, darker between the segments ; the sub-dorsal lines and 

 spiracles indicated by depressed dots. Head deeply lobed, light chest- 

 nut, jaws brown, dorsal plate pale brown, dotted along its posterior 

 margin with black, anal plate pale brown, anterior feet black. Eating 

 the inner substance of the root-stock of Plantago lanceolafa, living 

 entirely in the cavity thus formed, its presence 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 disap- 

 peared. It is now short, thick, and very sluggish, dull white, the third 

 to fifth segments rather more transparent, dorsal vessel visible, head 

 and dorsal plate light brown, darker at the edges, 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 

 j whitish becomes brown, and finally sooty. Pupa light chestnut, dorsal 

 j region paler. 



Dr. Hofmann, in his " Kleinschmetterlingsraupen," describes the 

 larva of sinneUa (from Treitschke and Hiibner) thus : — " Light bark- 

 " brown, with white longitudinal stripes, head brown spotted with 

 " black, dorsal plate black. In September, on Chenopodiumr 



Clearly this description does not refer to our insect. 



The Inrva of Ilovioeosoma hincevella, Steph.^ — This is to be found 

 in the middle of August in the flower- and seed-heads of Cardims 

 lanceolafus, eating the young seeds and excavating a large cavity in 

 the solid substance at the base of the flowei'-head, in which cavity it 

 lives. When full-fed, it leaves the head and spins a tough brown 

 cocoon among rubbish, in which (like the allied species) it remains 

 unchanged through the winter and spring. Several of the moths 

 emerged in the third week in July. 



This larva is stout, more particularly at the posterior extremity, 

 very pretty, pale green, paler beneath, with pink dorsal and sub-dorsal 

 stripes, spiracular stripe also pink but interrupted, each segment 



