Vol. I, No. 3.] The Hydra of the Calcutta Tanks. 73 
owe F 
ceases at the commencement of the hot weather.! Budding oc- 
curs simultaneously. I have - seen more than two buds on one 
at the same time, and one is commoner; nor have I seen an 
attached bud budding. The pee consists chiefly of small Crustacea 
and worms. Large Daphniids on coming in contact with the ne- 
own we and recover movement afte few minutes, Adult 
Polyps show little inclination to leave a situation in which they 
have settled, and b ely move far from their parents ; conse- 
quently, large numbers of individuals may often be found within a 
small radius in ee tanks, though there may be none on the sur- 
rounding plants. In an aquarium they desert the water-plants 
and take up a Bocitici on the side of the glass farthest from the 
light. If starved they become extremely pale and attenuated 
perature such as that brought about by the sun shining directly 
on the cea of the ble ina ree glass aan, . 
So T am aware, the genus Hydra has not previously 
been rocunded from British, Tndia, Wat a snes CH. fusca ?)® is re- 
orted from Tonkin. The late Professor ee as 
Major Alcock informs me, collected many specimens ee Calcutta. 
Ihave myself seen a species (probably the same as the Calcutta one). 
in an aquarium in the Experimental Gardens at Penang. 
! Since the beginning of the hot weather my captive specimens have disap-. 
i and I have not been able to find a 4 he in the tanks. April 12th 
1905. This remark gerne igen singe ep sae 
2 Richard, Mem. ool. France, vii, What may be the same: 
Species is recorded lat Gorkeltha i set Gal. Jahrb, Syst., 1904. p 
