ACID AIJID.-E— ACID ALIA. 71 



rather elliptic shape of similar dark-browu, and then a black 

 square mark close to the segmental division ; both of these 

 shapes are distinctly divided in halves by the thin pale 

 greyish-ochreous dorsal line, which then vanishes, but re- 

 appears as a pale spot or two within the base of the hinder 

 V-mark ; the subdorsal line is of the same pale colour, and 

 also appears just at each end of a segment, where it intersects 

 a dark brown streak at the side of the back, slanting in a 

 course parallel to the limbs of the Vs ; on the hinder rust- 

 coloured segments the markings are more tender, and on the 

 last three are but imperfect diamond shapes of brown, the 

 tubercular blackish dots being visible upon them ; a faint 

 thin line of ashy-grey separates the colouring of the back 

 from the blackish ventral surface, which has on each segment 

 three ashy -grey marks, together in form resembling a lyre, 

 and two dots of the same colour at each end ; the spiracles 

 are black, and the raised dots and their bristles are very 

 minute, and rather numerous at each end of the body. 



The only variations that occurred were that one individual, 

 from first to last, continued to be rust-coloured, and that 

 another became, after hybernation, wholly suti'used with 

 dark brown. (W. Buckler.) 



August till May, or June ; hybernating when about half 

 grown ; on knotgrass, chickweed, mouse-ear chickweed, and 

 other low-growing plants, also on hawthorn, honeysuckle. 

 and bramlile. Probably it feeds naturally on the low plants, 

 but this is uncertain, since the larva does not] appear to 

 have been captured, and our knowledge of it is solely derived 

 from those reared from the egg in confinement. 



Plpa short and rather thick ; eye-covers prominent ; limb 

 and antenna-covers very compact and level, moderately 

 glossy but hardly showing any ti-aces of sculpture ; wing- 

 cases also smooth and ratlier glossy ; dorsal segments 

 minutely and obscurely punctured, but thickened at the 

 hinder edges : abdominal segments still more thickened at 



