122 



Memoirs of the Indian Museum. 



[Voi,. V, 



matous form. As the presence of both in the region to be considered was evi- 

 dently adventitious, they may be dismissed here in a few words. 



The marine species was Membranipora tuber culata, Bosc, a form common in the 

 Atlantic and already recorded from Indian seas by Miss Thornely 1 . A number of 

 young colonies were observed on a stick that had been washed in at the sea-mouth 

 opposite Arakhuda. The species lives attached to floating objects, especially algae 2 ; 

 Miss Thornely' s specimens, though taken over deep water, were on a floating Fucus 

 and evidently came from near the surface. 



The Phylactolaematous form I recently described under the name Plumatella 

 punctata var. longigemmis* . It grows luxuriantly in a pond of practically fresh water 

 on Barkuda Island, and in September we found its statoblasts in large numbers on the 

 surface of the main area, on to which they had probably been blown by the wind. 

 We could obtain no evidence that they germinated in the lake and the species can 

 hardly be included in the fauna thereof. 



. GEOGRAPHICAL UST OF CHILKA SPECIES. 



jw.a.=main area : c 



).ch.=outer channel: 



sp. gr. = specific gravity of water in the lake. 





Chilka 



IyAKE. 



Further Distribution. 



sp. gr. 



ECTOPROCTA. 



m.a. 



o.ch. 







Cheilostomata. 











Membranipora hippo fins 

 Ctenostomata. 



X 



X 



Cosmopolitan (marine and es- 

 tuarine) . 



iooo — 1*0275 



Bowerbankia caudata * 

 Alcyoniaium my tili 



X 



X 



European seas. 

 Cosmopolitan (marine). 



1 006 — 1 '0275 



ENTOPROCTA. 











Loxosomatoides laevis 



X 



X 



Madras backwaters (brackish water). 



i-ooo— 1 0275 



* Occurred formerly in pools near shore of main area, not found in lake. 



ECTOPROCTA. 



Cheixostomata. 



Genus MEMBRANIPORA, De Blainville. 



1909. Membranipora, Levinsen, Morph. Syst. Studies Cheilost. Polyzoa, p. 144 

 (Copenhagen). 



Both the species of Cheilostomata to be discussed belong to the genus 

 Membranipora as restricted by Levinsen, having the armature of the lateral wall 



1 Rec. Ind. Mus. I, p. 185, fig. 3 (1909). 



2 Norman, Journ. Linn. Soc. (Zool.) XXX, p. 287 (1909), 



3 Rec. Ind. Mus. XI, pp. 168, 169, fig. 2 (p. 166), pi. iii, fig. 2 (1915). 



