112 THE ENTOMOLOGIST. 
there must I fancy be a necessity—a movement, in fact—in 
search of a locality where the food-plant in spring is earlier, 
as suggested by Mr. Belt. At any rate, with entomologists 
living on the spot, especially in Ceylon, we ought soon to 
have more reliable data on the economy of migratory butter- 
flles— Henry Reeks; Manor House, Thruxton, April 9, 1874. 
Tortriz ribeana and T. cerasana.—“ My. Barrett asked me 
whether I thought Tortrix ribeana and T. cerasana were 
species, or only varieties. Dr. Knaggs quotes a portion of 
my reply, and appears to infer that I had only once seen the 
two forms in copulation. I have seen them so repeatedly, 
and, as the larve are similar, I have no doubt of their being 
varieties of one species.— Henry Doubleday ; Epping, March 
14,1874.” (‘ Entomologist’s Monthly Magazine’ for April, 
p. 253.) 
[When, as in this instance, two shades of colour in 
imago are produced from similar larva, and the two shades 
habitually intercopulate, we must not suppose them species, 
otherwise the species of some Tortricide would be endless. 
—Edward Newman. | 
Phycis Davisellus, Newman.—I sent a pair of this species 
to my kind friend Professor Zeller, who informs me that it is 
new to him, and he believes it is unknown on the Continent. 
It bears no resemblance whatever to Albariella, and does not 
belong to the same genus.— Henry Doubleday ; Epping. 
Polydrusus sericeus:x—In May of last year (1873) I had 
the good fortune to secure, near Crabbe Wood, Winchester, 
a single example of the beautiful green weevil, Polydrusus 
sericeus, Schonherr, a species which, as I.am informed by 
Mr. Janson, “ though taken in some numbers many years ago 
by the late Rev. G. T.. Rudd, in a wood at Kimpton, near 
Ringwood, Hants, has not, to my knowledge, occurred since.” 
—W. A. Forbes. 
Cryplocephalus bipustulatus.—With regard to Cryptoce- 
phalus bipustulatus, which I have noticed in the January 
number of the ‘ Entomologist’ (Entom. vii. p. 23) as occurring 
on St. Catherine’s Hill, Winchester, it may be of interest to 
know that C. lineola, of which C. bipustulatus is regarded by 
some as a variety, has also occurred during the past summer 
in exactly the same locality, so that this, as far as it goes, 
seems to show that the above view is the correct one. 1 may 
