THE SWISS SPECIES OF THE GENUS HESPERIA, 17 
1919. ‘Taken in the afternoon flying round buckthorn bush. 
Miss N, and Mr. L. B. Prout. 
HEPIALIDA. 
Hepialus humuli, L.—Plentiful at dusk in most meadows. June 
and July. 
Hepialus sylvina, L.—Four males, August. One female, September, 
1912. 
Hepialus lupulina, L.—Plentiful at dusk in most meadows. Late 
May and June. Also found on fences. 
Hepialus hecta, L.—Abundant at dusk in June anywhere that 
bracken grows. 
The record of the following species hag been supplied by Mr. 
Oldaker since the publication of his List in 19138 :— 
Agriades coridon, Pod.—Recorded from Chiddingfold, 1911. KH. G. R. 
Walters. And Witley, 1905. 
Petilampa arcuosa, Hw.—Witley Common, 1910. E.G. R. Walters. 
Taeniocampa opima, Hb.—Witley. April11th,1916. G. E. Hastwood. 
Calymnia diffinis, Li.—Witley Common, 1911-1912. EH. G. R. 
Walters. 
Tholomiges turfosalis, W.R.—Witley Common, 1912. E. G. R, 
Walters. 
Hupithecia subnotata, Hb.—Witley, 1910. E.G. R. Walters. 
Phibalapterya tersata, Hb.—Wormiey, 1910. E. G. R. Walters. 
The Swiss species of the Genus Hesperia. 
By B. C. S. WARREN, F.E.S. 
(Continued from page 88.) 
H. andromedae, Wallengren. 
Andromedae has acquired the reputation of being one of the rarest 
Central EKuropean Hesperias. This reputation has been gained by false 
pretences; and is quite undeserved. In any Alpine locality where I 
have collected, in the cantons of Vaud, Valais, Bern, and Grisons, 
I have found andromedae to be much more widely distributed than such 
species as serratulae, alvens and cacaliae. Andromedae has a great 
range in altitude, and may be found on the wing from the end of May 
onwards, according to the height. The idea that July is the month to 
look for andromedae is probably the principal factor that has helped to 
maintain the species’ reputation for rareness. The vertical range of 
andromedae probably exceeds that of any other species, and is far 
ereater than that of any of the other three purely Alpine Hesperias, 
i.e., carlinae, cacaliae, and ryffelensis. Andromedae may be found from 
3700 ft. to over 9000 ft. and very likely higher. I have taken it near 
Caux at 3700 ft. and at Kandersteg at 3850 ft., while in the Ueschinen 
Tal (also near Kandersteg), where it is unusually plentiful, it occurs 
from just 4000 ft. 
The duration of the period of flight of andromedae is, like that of 
alveus, most uncertain; and the emergence irregular. It is one of the 
first Alpine Hesperias to emerge, I have taken it on May 23rd near 
Kandersteg, and it is not unlikely that in an advanced season it would 
be found even before this. At higher levels it is proportionately later, 
