278 THE ENTOMOLOGIST. 
those pointed out by Mr. Newman.—Herbert N. Marsden ; 
Gloucester, March 9, 1871. 
Erebia Ligea.—Has not Erebia Ligea as great a claim to 
be considered British as Doritis Apollo (or even Polyom- 
matus Hippothoé), it being, | understand, formerly found in 
the Isle of Arran?—James H. Rowntree; Scarborough, 
March 7, 1871. 
[Erebia Ligea and Doritis Apollo are about on a par in 
this matter. I think neither bas a claim; but Hippothoé 
certainly existed in a state of nature, in the fens, some years 
ago. I have seen fifty living larve collected there, and have 
specimens bred from some of them.—Hdward Newman.] 
Economy of Hesperia Sylvanus.—It was, 1 believe, the 
opinion of the old entomologists that there was ouly one 
annual brood of this species. In that case, | presume, the 
assumption must have been that the May individuals seen on 
the wing had hybernated. 1 have myself taken specimens in 
early summer, in such very bad condition that it was difficult 
to persuade oneself that they had not long left the pupa. 
Sylvanus may be found at many seasons, in June and July, as 
well as in May and August. Its life-history may prove to be 
this: from eggs, deposited in the summer, larve emerge, 
which feed for a time and then hybernate, feeding again in 
spring, and becoming adults in May; from these butterflies 
appear at the end of May or early in June, continuing 
frequently on the wing for some time, and depositing eggs, 
which yield another brood of larve and August butterflies. 
In some years it may be that the spring larve, growing 
slowly, produce butterflies at a later date, and then the 
larvee, of which they are the parents, may not attain their full 
size untill the ensuing spring.—d. &. S. Clifford. 
Scarcity of Hesperia Linea.—I can corroborate the state- 
ment that this species is scarcer of late years. In Hertford- 
shire it occurred plentifully some twenty years ago, in places 
from which it seems to have disappeared; also in localities 
in North Middlesex, from whence it is not reported now. 
On Wimbledon Common, where it was once abundant, I see 
very few of late. In 1869 these butterflies were very 
numerous on the railway banks between Greenhithe and 
Northfleet, in Kent; and in meadows, near Swanscombe 
Wood, some stragglers.—d. 
