376 



BRITISH MOTHS. 



and is rather local ; its principal localities 

 are Torquay and Teignmouth in Devonshire, 

 Weston in Somersetshire, Isle of Wight, 

 Brighton and Lewes in Sussex, Kent, Essex, 

 Norfolk, Suffolk, Gloucestershire, and Wor- 

 cestershire. It is said to have been taken by 

 Mr. Haughton in Ireland, but the locality is 

 unknown. (The scientific name is Xanthia 

 aurago.) 



602. Th Dusky-lemon Sallow (Xanthia gilvago). 



602. THE DUSKY-LEMON SALLOW. The 

 palpi are inconspicuous but sharp-pointed ; 

 the antennae are simple : the fore wings are 

 blunt at the tip and of a pale ferruginous 

 colour with smoky clouds ; the discoidal spots 

 are clearly defined, the lower half of the 

 median area of the reniform being filled with 

 gmoke-colour : the smoky clouds on the 

 general area of the wing are chiefly confined 

 to two irregular and indistinctly defined 

 bands, the first nearer the base than the 

 orbicular, the second beyond the orbicular, 

 and including the reniforra ; the second band 

 is interrupted by a transverse zigzag pale 

 ferruginous line ; beyond the band there is 

 frequently, but not invariably, a transverse 

 series of black dots, and beyond the black 

 dots, parallel with the hind margin, a smoke- 

 coloured bar often broken up into black spots : 

 the hind wings are very pale ochreous : the 

 head and front of the thorax are pale ferrugi- 

 nous ; the disk of the thorax is smoky ; the 

 body is of the same colour as the hind wings. 



The head of the CATERPILLAR is very de- 

 cidedly narrower than the second segment ; it 

 is porreoted in crawling, and not notched on 

 the crown ; the second segment is smaller and 

 narrower than the following ones : the body 

 is smooth and almost uniformly cylindrical, 

 Vmt very gradually increasing to the twelfth 



segment, which is the largest ; it is velvety, 

 and with the segmental divisions very clearly 

 marked ; the anal claspers are small, closely 

 approximate, and not spreading ; the head is 

 umber-brown, shading to paler brown on the 

 cheeks, and very glabrous ; the dorsal area of 

 the body is dingy-brown, the second segment 

 having a semicircular patch of darker brown, 

 the convex margin of which is directed back- 

 wards, and the disk of which is interrupted 

 by three pale longitudinal lines, with an in- 

 tervening pale spot on the convex margin ; 

 between each two there is a dorsal series of 

 subtriangular markings, all darker than the 

 ground-colour, the apex of each pointing 

 backward ; the ventral is paler than the 

 dorsal area, and is slightly tinged with olive- 

 green, the division between the dorsal and 

 ventral areas being abruptly marked, at the 

 region of the spiracles, which are intensely 

 black ; the dorsal area and triangles are varied 

 with linear markings, which disappear to wards 

 the period of pupation : it feeds on elm 

 (Ulmus campestris). 



The moth appears on the wing in Septem- 

 ber, but seems by no means generally dis- 

 tributed. It has been taken in some plenty 

 in the Isle of Wight, in Worcestershire, and 

 Staffordshire, abundantly in Derbyshire, and 

 also in Yorkshire. (The scientific name is 

 Xanthia gilvago.) 



603. The Brick (Xanthia ferruginea) . 



603 THE BRICK. The palpi are porrect ed 

 but short ; the terminal joint naked ; the 

 antennae are simple : the fore wings are nearly 

 straight on the costa, blunt at the tip, and 

 slightly scalloped on the hind margin ; their 

 colour is ferruginous gray : the discoidal spots 

 have a slender dark circumscription, except at 

 the upper extremity, where it is occasionally 

 wanting : the orbicular is more perfect than 



