158 THE ENTOMOLOGIST. 
moths from the hybernating cocoons. Eggs scattered in the 
country will for ever people our oak-forests with this  silk- 
producer, which can hardly degenerate. A mere ‘ delocalisation’ 
of a few miles, which the moths will cross over with a single 
stroke of their powerful wings, will be sufficient for their 
regeneracy.” 
Such is the short sketch (which I have translated freely from 
the original French) of this hybrid which has been denominated 
by Monsieur Bourdier, ‘‘ Perny-Yama de Montboyer.” 
I may mention that for several years I have obtained pairings 
of different species:—Pernyi (male) with Polyphemus (female) ; 
Cecropia (male) with Cynthia (female), several times; Cecropia 
(male), with Glover (female); Cecropia (male) with Polyphemus 
(female), several times; but in all such cases the eggs were 
infertile Crossings of Attacus Pyri with Cecropia have proved 
equally fruitless. 
110, Clapham Road, S.W., June, 1880. 
THE TORTRICES OF SURREY, KENT, AND SUSSEX. 
By Water P. Weston. 
(Continued from p. 133.) 
Olindia ulmana, Hub.—A local and uncommon species. The 
imago appears towards the end of June and in July among elm, 
hazel, and alder, and flies freely in the afternoon sunshine. A 
few years ago I met with this insect commonly among some 
alders, but it is very difficult to see on the wing; and I found the 
best plan was to le down, when they were easily discernible 
against the sky. The localities are Tilgate Forest, Haslemere, 
and Hastings; Box Hill, Esher; and Folkestone. 
Semasia spiniana, F. v. R.—Local, but much more plentiful 
some seasons than others. The.imago appears in July and 
August, and flies in the afternoon sunshine. It should be looked 
for among blackthorn hedges; and has occurred at Darenth and 
Birch Woods; Croydon, West Wickham, Mickleham, Ashstead ; 
and Tilgate Forest. 
S. janthinana, Dup.— Distributed throughout among hawthorn 
hedges. The imago appears in July and August, and flies in the 
morning and afternoon sunshine. The larva is said to feed in the 
