23« Notes 



The I 



Pools. (Plate II. figs. 1-4O 



. No, XII. 

 and Brackish 



By N. Annandale, D.Sc. 



Almost as little is known of the Freshwater Polyzoa of India 

 as of any other group oecurring in stagnant pools. Carter^ has 

 described the curious Ctenostome Hislojpia lacustris from N'agpur 

 and has recorded from Bombay two varieties of Plumatella^^ a 

 Paludicella^ and a form said to belong to the genus ZopJiopus,^ 

 a species of which has also been reported from Madras.^ In a 

 former note, belonging to the present series, further particulars re- 

 garding Hzslopia^have been given, while in respect to essentially 

 marine genex*a which stray into brackish water near the estuaries 

 of rivers, Stoliczka^ has described Membramjpora hengalensis from 

 the Ganges delta. The object of the present note is to bring to- 

 gether the published information, scanty as it is, regarding the 

 Indian forms and to add thereto the result of observations made 

 during the last two years in the neighbourhood of Calcutta and in 

 the outer Himalayas. The works, of which the greatest use has 

 been made, are Allman's Monograph of the Freshwater Polyzoa 

 (London, 1856) and Kraepelin's Deutsche Susswasser-Bryozoen 

 (Hamburg, 1887). Jullien's monograph of the group (Bull. 

 Sac. Zool. France^ 1885, p. 89) although useful in certain respects 

 is in others capricious ; while Harmer s chapter in the Oamhrzdge 

 Natural History (vol. 11, p. 493, 1896) affords a valuable summary 

 of the subject. Within the last few years several papers, especi- 

 ally on the American and African species, have been published, 

 but most of them have no very direct bearing on the Indian forms. 

 References to some of the more important will be found in the 

 Zoological Bec<yrd for 1887, 1890, 1893 and 1896. 



CHEILOSTOMATA, 



Membranipora bengalensis, Stoliczka. 



estuary of 



xne species was orgmnnj^ luuixu xu, j.^^^ '^ ^x^^ couixa,xjr ut 

 the .]\Iatla River and in pools containing from one^hird to one- 



> 



1 Ann, Mag. NaL HisL (Series 3), i, 1858, p. 169, pi. vu. 

 Z Hid, (Serie8 3),in, 1859, pp. 333, 335,341. ^^ 



5 Mitchell in QiiarL Journ. Micr. 8ci. (Series 3), 11, lc62, p. tl. 

 4 Journ. Asiat Soc. Bengal, 1906, p, 59. 



6 Ibid., part ii, 1869, p. 55, pi. xii. 



