THE ENTOMOLOGIST. 75 
June, second year; (4) Ceroptus Cerri of Mayr—it appears 
from April to June, second year—francis Walker. 
Dryocosmus cerriphilus. — This 
rare gall is also found on the young Fig. 7. 
twigs of the Turkish oak (Quercus 
Cerris). The galls are about the 
size of a hempseed, and are attached 
to one spot in the twig, quite sur- 
rounding it, and mofe or less densely 
crowded. Each gall, by means of a 
short pedicle, is inserted in the bark 
of the twig, which, in consequence, 
is thickened: sometimes the pedicle 
becomes gradually lengthened, and 
the gall terminates in a spherical 
head, thus assuming a clavate form ; 
the interior is occupied by a rather 
large Jarva-cell. As I have never 
seen the gall ina recent state, but 
only on a two-year-old twig, in 
company with similar old galls on 
an oak that was about eighty years 
of age, I should recommend the Drvyocosmus crrrirnius. 
reader to seek farther information 
from Dr. Giraud’s ‘Signalements, &c., Ver. zool. bot. Ges. 
1859, p. 354.—G. L. Mayr. 
Dryocosmus cerriphilus has one inquiline, Synergus varia- 
bilis of Mayr; it appears from April to June of the second 
year.—francis Walker. 
y 
Kf} 
sy, 
L) 
Geographical Distribution of Continental Rhopalocera. 
By the Rev. F. A. Watxer, M.A., F.I.S. 
In compiling the following catalogue it must be understood 
that I have only set down such species as fell under my own 
personal observation. The statistics accordingly of each 
locality, though greatly defective, may be relied on as far as 
they go. 
Bellagio and its environs.—1. Papilio Machaon: gardens 
of Hotel Grande Bretagne, Villa Serbelloni, Villa Julia, 
