el Proceedings of the Asiatic Society of Bengal. [N.S., XV, 
C. kieffert and C. oxystoma) are of a curiously elongated form, ye oval as 
yon date described for kieffert. Those of oxystoma hatch in from 3-11 
days according to weather. The larvae are legless and ivolts, “tev 
in se. tine fas y life, bu e 
and breathing by sia of characteristic shape the different species 
Pupation in 10-46 days, the pupal period Taeting 4-7 days. The adults 
have a characteristic habit of altel with head downward and pressed 
close to the supporting surface. The females (only) bite by day yrs 
a: thor distending themselves with blood. Eggs are laid in 
ashings of stables, though all other species observed breed in ‘ive 1 
pshoan th. 
Some points of comparison between the larvae and the biting habits 
of Culicoides and Ceratopogon are indicated. 
A note on the effects of Mercurous Chloride on Culicid 
Larvae.—By 8. K. Sen 
Pa re eedingly small doses a in 10,000) of mercurous chloride have a 
arkably organise tate nm the larvae of Culicidae, death occurring 
within 12 to 18 hou i or different proportions of the 
salt in relation ie vache quantities, depths and sur areas of wat 
Pp ous effect is compared with that of mercuric chloride and other 
halogen salts of th 1 rom the results ob d it is concluded 
) its action is sa othe ae 0 ~- ; fi aces 
3 pag o~ in | litre) heca urated solution of 
t the 
ct; and therefore 2) that the pleut undissolved canuctes 
of sae salt act through the mouth, or cutaneously, or bot 
A preliminary note on the action of acids, salts and al- 
kalies on the roi ean of culicid eggs and larvae.— 
By H.N. Suar 
These experiments consisted in placing eggs of Culex in solutions o 
various strengths and noting the effect on {L) dhspeeces 5 (2) rate of develop- 
ment of larvae, pure water being used as a c 
arked differe re found in the ane a oh the salts, several— 
ite jer citrates aie. pss: s—increasing gen sy - development 
sede tice The chemicals employed w 
Acide —Tanni GC; pei boric, citric, met Duty, acetic, lactic, 
ri 
oO 
tartrate, Sodium one. Sodium oxalate, and Potassium citrate. 
ium i i cium 
On some Trichonym pha of the intestine of Leucotermes 
indicola.—By F.p 
The author Bee ye sali the Congress the results of say studies on 
f Leu m, belonging to the gener 
ne parasi cotermes 7 Wasm, belon he genera 
Trichonympha Gide 1877) and Leidya (Franca 1914) the present 
paper, the e dealing with the parasites of Indian 
Termites, reference is made to the original description of Leidy, 
re his plate 51 belonging on ha 
can 
accepted as of Tr. agilis. Leidy has made some mistakes in his 
studies of Tr. agilis, and these mistakes have been spread by text-books 
