HADENA THALASSINA. 55 



broad ends of the wedges, a lateral anterior dot mid- 

 way between the subdorsal and black spiracular line ; 

 a dull brown plate on the second segment; head 

 brownish-ochreous, with a blackish stripe on each lobe 

 from the crown to the mouth. 



Variety 3. — A dull greyish-brown; the dorsal and 

 subdorsal lines, and penultimate transverse mark, very 

 little paler than the ground ; the tubercular dots black ; 

 the wedge marks black, with a thin transverse line of 

 ground-colour cutting them through towards the 

 broad end. (W. B., 1867; B.M.M., August, 1867, 

 IV, 63.) 



Hadena genista. 

 Plate XCV, fig. 2. 



By the kindness of Mr. Doubleday, who liberally 

 supplied me with part of a young brood reared from 

 eggs, I have been able to take figures and notes of this 

 species. 



They fed well on Alsine media and Polygonum persi- 

 caria, and were one-third grown by July 14th, and by 

 the 29th some had obtained their maximum size, and 

 the others by August 7th, and had all retired below 

 the earth by the 14th. The moths came forth from 

 June 11th to 13th in the following year, 1866. 



When young the colours of these larvse were 

 brighter and darker than they afterwards became, with 

 distinct paler dorsal and subdorsal lines outlined 

 with darker, and black spiracular lines ; otherwise 

 their markings were similar to the following. 



When full-grown they were very plump creatures, 

 varying from an inch and five-eighths to an inch and 

 three-quarters in length, cylindrical, and tapering to- 

 wards the head; the back and sides, as far as the 

 row of spiracles, of very mottled dull brown, brownish- 

 grey, dull greenish-grey, deep purplish-brown, or 

 dirty olive-greenish, for all these tints were found in 



