SEIilCORIDM—PENTHINA. 377 



costal clots, and a whitish spot towards the anal angle. Hind 

 wings yellowish white with a cloudy lead-black bordei'. 

 On the wing from May to July. 



Lak\a cj-lindrical, plump, rather wrinkled, colour pale 

 primrose-yellow; raised dots of the same coloui', shining, 

 furnished with minute hairs; head and dorsal plate shining 

 black ; anal plate small, brown. 



August and September, on wild balsam {Lapcitkns noli- 

 ini-tan{fere) in the thick solid stem, feeding on the cellular 

 substance, and hollowing the lower portion of the stem quite 

 down to the root, so as to form a chamber in which it lives, 

 and UJ3 and down which it moves freely. Spinning up in 

 this chamber and remaining in the stem through the winter 

 and till June, when it may be reared from the withered old 

 stems. 



Discovered in these Islands in 1873, when the late Mr. 

 J. B. Hodgkinson found larvae in stems of wild balsam, in 

 the north of England. From the dried stems of this extremely 

 local plant he and others have reared it in some numbers, but 

 I find no record of its capture on the wing, nor of its occur- 

 rence with us anywhere except in the county of Westmore- 

 land and in North Lancashire. Abroad it is fairly common 

 in Germany, Austria, Galicia, Livonia, Sicily and Sweden. 



15. P. carbonana, Dhld.; fuligana, Huh. (?) — Expanse 

 i inch (12 mm.). Fore wings narrow, broadest behind, 

 dusky white or bluish black, with the basal blotch and 

 central band deep black. 



Antennte black ; palpi, head, and thorax brown-black : 

 abdomen dark brown. Fore wings rather narrow but in- 

 creasing slightly in width to the hind margin ; costa nearly 

 straight, apex bluntly angulated, anal angle prominent, 

 thus the hinder area is much squared ; grey-black or bluish 

 black ; basal blotch deep black ; central band obscurely deep 

 black, much notched and clouded at the margins ; apical and 



