84 Journal of the Asiatic Society of Bengal. [February, 1907. 



fifth of sea-water, ^^e., in water which contained from one-third to 

 one-fifth of the percentage of the salts present in ordinary sea- 

 water. Both Mr. C. Paiva and I have recently searched in vain 

 for it in the same pools ; but I have found what I take to be dead 

 and worn specimens on bricks in the Matla estuary. The types 

 are in the collection of the Indian Museum, but appear to be in very 

 bad condition, having been preserved in glycerine. They have been 

 submitted, together with the whole collection of marine species, 

 to Miss Thomley, of Liverpool, for examination. 



MemhranipoTa is one of the few Cheilostomous genera, which 

 inhabits brackish water. One species is common in ditches on 

 parts of the English coast ; but no form has as yet been found in 

 pure fresh water. The genus is cosmopolitan and essentially 

 littoral. 



CTENOSTOMATA. 



Paludicella. 



Carter has recorded an indeterminate species from Bombay 

 (brackish water) and what may be the same or another form of the 

 genus occurs in brackish pools and canals in the Ganges delta. 

 I have not yet had an opportunity of examining it critically. 

 Kraepelin (ojp, cit.^ p. 159, foot-note) recognized two species, P. 

 ehrenherguj van Beneden, and P. mulleri^ Kraepelin, as occurring 

 in Germany, the former having a wide distribution in Europe and 

 North America in brackish aud even fresh water near the mouths 

 of large rivers. P. TnuUeri is very close to the genus Victorella, 



inorui 



latter the zooecia do uot stand upright, while in Victorella^ al- 

 though direct buddincr of new zooecia from old ones take place, the 

 older zooecia are vertical and not adherent to the stolon, which 

 Is more distinct than in PaUidicella. Probably the Indian form, if 

 it is distinct from Victorella^ is identical with one of the European 

 species. 



Victorella pavida, Kent. 



This species has only been recorded hitherto from a few local- 

 ities in England and Germany, its small size and plant-like appear- 

 ance probably having caused it to be overlooked. It is common on 

 sticks and water-plants in brackish pools and canals at Dhappa 

 in the neighbourhood of Calcutta, and also in tanks at Port Can- 



salt. 



very 



proportion 



the zooecia arise close to one another, but I do not find anj 

 structural difference from the English form such as would justifj 

 the creation of a new species. 



