ACIDALriD.'E--ACIDALIA. 33 



Underside of the fore wings brownish-yellow with a faint 

 smoky clouding from the base : transverse stripes as on the 

 upper side, but broader and rather browner ; hind wings 

 yellowish-white, also with the lines a little more distinct. 

 Body and legs pale brown. 



Seldom variable, except in the faint indication in some 

 specimens of minute pale brown discal or central dots. But 

 in the collection of Mr. G. T. Porritt is a specimen reared by 

 himself which has the two transverse lines nearest the middle 

 of both fore and hind wings thickened, darkened, and suffused 

 so as to form a central darker band. 



On the wing in June and July ; in confinement a second 

 complete emergence has been obtained in September, but I 

 am not aware that this has been noticed, even casually, in 

 the wild state. 



Lakva a little over half an inch in length ; tapering con- 

 siderably toward the head, which is small and notched, 

 tucked under when at I'est, thrown forward when in motion ; 

 skin most wonderfully wrinkled and warted, the warts being 

 on the wrinkles, and so arranged that they form on the back 

 a double ridge on each segment, which contracts to a single 

 median ridge at each fold, and another, more prominent, 

 ridge at the spiracles ; segmental divisions very decidedly 

 cleft ; bristles short and clubbed. The larva feels stiff and 

 firm, when disturbed it curls-in the front segments in the 

 same plane with the rest of the body, and not on one side as 

 the longer Acidalim do. In colour it varies very little 

 throughout its growth, being generally of a very muddy 

 reddish-brown, but just after moulting almost black, the 

 markings few and indistinct; the hinder portions are some- 

 what paler than the rest of tlie body, but the segmental folds 

 darker ; there is a i^aler dorsal line, edged with black threads, 

 which show most distinctly on the hinder segments; and the 

 <lorsal ridges are paler than the ground colour. (Kev. 

 -I. Hellins.) 



VOL. VIII. C 



