( ) 
insect, he said that he had observed copulation to take place 
below the surface of the water ; a discussion followed on this 
point, in which several of the Fellows took part. 
Mons. Alfred Wailly exhibited living larvffi of Bhodia 
fugax, and also a cocoon of the species, which is of a bright 
green colour, and differs considerably in shape from those of 
all the other known silk-producing Bombyces. 
Canon Fowler exhibited, on behalf of Mr. T. D. A. 
Cockerell, of Las Cruces, New Mexico, four species of lac- 
producing Coccid(B^ viz., Tachardia gemmifera, Ckll., from 
Jamaica, T. pustulata, n.s., and T.fulgens, n s., from Arizona, 
and T, cornuta, Ckll., from New Mexico. Canon Fowler also 
read the following letter on the subject, which had been 
received from Mr. Cockerell : — 
"I need say nothing about T. gemmifera and cornuta, since 
the full particulars can be found in the Canadi%n Entomologist. 
The other two species were lately sent me by Prof. J. W. 
Tourney of Tucson, Arizona ; but without particulars con- 
cerning their precise locality, mode of occurrence, etc. I have 
written to him for information of this kind, which will be 
presented in a technical paper to be published elsewhere. 
The T. pustulata occurs in dull dark crimson masses, 
about 4 mm. long, and 3 or less broad, often running together, 
and irregularly ornamented with small pellucid eminences. 
The insect itself has the hairs of the anogenital ring straight 
and rather short ; the lac-tubes conical, broadening at base ; 
the spine very broad at base, rapidly narrowing to its slender 
extremity. The anogenital ring of the adult presents ten 
bristles, while that of the very young larva has but six. 
" T. fulgens is quite different, forming irregular bright 
orange-red masses, presenting quite elevated prominences. 
A single individual is about 5 mm. long and 4 broad, but 
they commonly occur massed together. The insect removed 
from the lac has the body purplish ; the spine is stout, and 
the lac-tubes are cylindrical. 
Both species, on boiling in caustic alkali, give a very fine 
pigment. Prof. Tourney thinks that T., fulgens was probably 
on a leguminous shrub, and T. pustulata on a species of 
Compositas. 
PBOG. BNT. SOC. LOND. IV., 1895. C 
