155 
DECEMBER goth, 1807. 
Mr. R. ADKIN, F.E.S., President, in the Chair. 
Colonel Partridge exhibited specimens of Ephyra trilinearia, 
and contributed the following note: 
“1, Typical female parent. 
“2, Specimen of brood from above, all of which were 
dwarfed and very red. They were exhibited at the Society’s 
meeting on November 12th, 1896. 
‘“*3_-6. Specimens from the same parents, which stood 
over in pupal stage and emerged in May of the following 
year. It will be observed that these are neither so dwarfed 
nor so red as those that emerged the first year, but are never- 
theless of a ruddy type, and the crenulated spots can still 
be traced, though they are not so conspicuous.”’ 
Mr. McArthur exhibited the following varieties of species 
he had captured or bred in 1897:—Arctia caia, yellow, 
coalesced, and light varieties. Polyommatus (Lycana) bellar- 
gus, blue females. Abraxas grossulariata, radiated, light, and 
coalesced forms. Bombyx rubi, with the transverse lines 
much lighter than usual and very wide. Polyommatus (Lycena) 
icarus, blue, white, and splashed females. P. corydon, L., 
under sides with numerous spots absent. 
Mr. Mera exhibited a box of Abraxas grossulariata, bred 
at Forest Gate in 1897, which were separable into two 
distinct groups, a light and a dark one. 
Mr. Montgomery exhibited specimens of Smerinthus ocel- 
latus and Cossus ligniperda, which he had cleansed from 
grease with the use of benzine and a blowpipe. He stated 
that the specimens had been in an extremely bad state; but 
from the perfect condition of the fringes and the hairs of the 
bodies the operation had been most successful. He also 
exhibited cases of Fumea intermediella (nitidella). 
Mr. Step exhibited some examples of swimming crabs 
(Portunide) from Portscatho, Cornwall; the species repre- 
sented including Portunus puber (Linn.), P. depurator (Linn.), 
P. corrugatus (Penn.), P. arcuatus, Leach, P. pusillus, Fabr., 
Polybius henslowtt, Leach, and Bathynectes longipes (Risso). In 
the course of his remarks upon the exhibit, Mr. Step called 
attention to the feature that had earned the popular name 
for the group—the flattening and expansion of the terminal 
joints of one or more pairs of limbs to adapt them for use 
as paddles, whereby the crabs might actually swim in mid. 
water. Each species shows some special modification of 
