lV 
Mr. Thomas sent also an extract from the report of Pisciculture in 
South Canara, detailing experiments made by an intelligent observer to 
test the destructive habits of the insect. In one instance a hollow was 
watched, in which were many freshly deposited ova, but no Corixe. The 
next morning the latter were there in large numbers, and nothing left but 
the empty egg-shells. In another experiment the ova were placed in a 
finely woven basket, and the Corixee immediately came in quantities and 
endeavoured to penetrate from the outside. ‘This insect, which is deposited 
in the British Museum in accordance with Mr. Thomas’s request, Prof. 
Westwood characterized as under :— 
“ CorIxA oyrvorna, sp.n. Minuta, supra griseo-fusca, infra (cum pedibus) 
pallide lutea; capite lutescente; hemelytris griseo-fuscis, apicibus paullo 
pallidioribus, margine antico lineis nonnullis punctoque apicem versus 
nigris, notato; femoribus intermediis longis, tibiisque gracillimis; metasterno 
profunde bisinuato, angulis posticis lateralibus elongatis. Long. corp. 
lin. 14; exp. hemelytr. lin. 2}. Habitat in fluviis India orientalis copiose, 
ova piscium devorans” (Dom. H. S. Thomas). 
Paper read. 
“Description of a new genus, and of six new species of Pierins,” by 
Mr. A. G. Butler. 
The new species were described as Ixias venatus, from the White 
Nile; Kricogonia fantasia, from Nicaragua; Callidryas fornax, from Chili; 
©. Jaresia, from Para; Euchloe limonea, from Mexico; and Larino- 
poda (n.g.) lycenoides, from West Africa,—this latter form seemed, in 
some respects, intermediate between the Eronia group of Pierine and 
the genus Deloneura among the Lycienide, according to Mr. Butler. 
20 February, 1871. 
A. R. Wattace, Esq., President, in the chair. 
Exhibitions, de. 
Mr. Bond exhibited a hybrid between a male Bombyx Pernyi and a 
female B. Yamamai, bred by Dr. Wallace. In colour it more resembled 
that of its male, in shape that of its female, parent. He also exhibited a 
crippled example of Bombyx Mori, likewise bred by Dr. Wallace, still 
retaining the larval head. 
Mr. M‘Lachlan called attention to what was, in all probability, the first 
record of a similar arrest of development, viz. a paper in ‘Der Natur- 
forscher’ for 1781, by O, F. Miiller, intituled, “ Entdeckung eines 
