THE SWISS SPECIES OF THE GENUS HESPERIA. 129 
localities, and I fancy in some southern ones it is triple-brooded. In 
Switzerland the second brood is very partial, and possibly in many 
seasons non-existent. The only second brood example I have taken 
was a 2, at Follaterre, on July 18th. I have collected in the various 
localities where the first brood flies. through several consecutive seasons 
late into September, without ever finding another specimen that could 
have been a second brood one. In the mountains there is, of course, 
only one brood; but this, in my experience, is of much longer duration 
than any brood in the plains. The emergence, however, does not take 
place much later than the first emergence in the plains, even at the 
highest altitudes. It has been often recorded as not appearing until 
July in the Alps, but this is quite a mistake. At Lenzerheide (Grisons), 
at a little over 5,000 ft., I found it on the wing by May 20th, and it 
was still to be seen on the wing until mid July. Some seasons it should 
be found even earlier, for it was a late spring the season I was there ; 
but collectors do not often visit such altitudes in the middle or 
beginning of May, which is doubtless the origin of the July supposi- 
tion. The same applies to malvae, which I have taken at just over 4,000 
ft. on May 10th, indeed the same can be said of any species of Hesperia 
which occurs both in the lowland and alpine regions. The date of 
emergence is never changed by a rise of 2,000 ft. more than eight or 
ten days; anda rise of from 4,000-5,000 ft. rarely retards emergenca 
more than a fortnight. 
On the habits of malvoides, Prof. Reverdin gave some interesting 
notes, from several well known entomologists. It was suggested that 
malvoides inhabits moist, or even swampy, localities, while malvae shows 
a preference for dry ones. My own experience has given me similar 
results, as far as malvoides is concerned; I have never found it except 
in damp and swampy places, often in marshes, on the banks of streams, 
ete.; but with malrvae it has been different. I have taken it usually in 
dry localities; but on three occasions | found it in absolute swamps. 
The first, a single specimen in the St. Triphon marshes ; the second, 
in the swampy locality on the bank of the Veraye Torrent at the foot 
of the Rochers de Naye, famous for L. amphidamas, where malvae is 
abundant every year; the third, in the Wageti marshes at Kandersteg, 
where malvae is common, flying with such water-loving species as P. 
delius, B. ino, and andromedae. I am afraid then, the nature of its 
habitat will never be evidence enough to determine the identity of the 
species by; but all the same, malvoides seems to be only located by or 
near water. 
The transitional variation of malvoides is of some interest, and 
particularly so when it affects the basal spots. The value of these as 
a distinguishing characteristic has already been mentioned, and though 
they are just as subject to minor variation as any other marking of the 
hindwing, there is only one development which robs them of their 
value. When the basal spots are considerably eniarged the species 
assumes some likeness to an aberrant specimen of fritid, mm which 
these spots are somewhat smaller than in the type. Now, this 
aberration affects malvoides only, for although it occurs in malrae also, 
as that species is single-brooded and over at least two months before 
fritillum emerges, there can never be any question as to its identity. 
In the southern area, however, where fritillum and malrotdes both 
occur, the second (? third) brood of the latter would coincide with the 
