128 THE MOTHS OF THE BRITISH ISLES. 



writing of it in 1831, states that it was very rare, and that 

 specimens in his collection were from a lane near Darenth, 

 in Kent. With one exception (Hastings, Sussex, 1876), the 

 only present known locality in the British Isles for the species 

 is the Warren, near Folkestone, Kent, where it was dis- 

 covered in 1859. Here it occurred more or less freely for 

 several years, then it became scarce, and finally, about 1890, 

 seemed to be practically extinct. In 1906, however, Mr. G. 

 H. Conquest netted a female specimen in the Warren on 

 July 24, and as she laid a few eggs, it may be presumed that 

 others had been deposited before capture. From the eggs 

 obtained by Mr. Conquest, nine moths were reared in July, 

 1907. The caterpillars thrived on traveller's joy {Clematis 

 vitalba), which is probably the natural food ; but they will 

 also eat dandelion, knotgrass, etc., and like the withered leaves. 

 By keeping in a warm place, it is possible to get moths out the 

 same year, but, as a rule, the caterpillars prefer to hibernate. 



The range abroad extends to Amurland, China, Corea, and 

 Japan. 



The Rosy Wave {Acldalia (^Leptomeris) emiitaria). 



Figure 10, Plate 49, shows an example of this species, which 

 also has angled hind wings. In coloration it is whiter and more 

 silky than the last, and when fresh is delicately tinged with pink ; 

 the first and second lines are dotted or represented by dots, and 

 the greyish central shade is obliquely inclined in the direction 

 of the tips of the wnngs. In the marshes on the Essex and 

 Kentish coasts the species is generally rather more rosy (ab. 

 subroseata^ Haworth), but this form occurs occasionally in the 

 New Forest also. The long, slender caterpillar is whitish 

 ochreous, inclining to pinkish ; on the back of each ring is a 

 broad grey shade enclosing a white spot, and a faint grey line 

 on each side. Spiracles, black, with black spots below them on 



