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



T 



as the forms in India are concerned, it is not impossible that only 

 .two species, both rather variable, occnr, in addition to P. punctata, 

 but m aay case it would be preferable to name them P. emar- 

 ginata,^ Allman and R repens (Unn.), As a matter of opinion, 

 1 think It probable that at least three species distinct from 

 J-, punctata and P. pMltppmensis, are found. That all of these 

 forms can be Identified with Em^opean "species" is a powerful 

 argument for their being regarded as specifically distinct. 



Plumatella repens (Linn.) 



P. repens and coralloides, Allman, pp. 93 and 103, pi. v and 

 pi. vii, figs. 1-4; Alcyonella fungosa, ibid., p. 87, pi iii, figs. 



/3. (partim) K 



123, pi.vi; 4s. n2, 119; pi. .,Hf^:'^.^i^r\ML^. 



■ Carter, folloAvmg Allman in his identification, recorded 

 P. repens from Bombay, and several phases of the same species occur 

 common y m Calcutta. The most abundant of these is identical 

 with Allman s P repens var. ^. In this form the zooecia are 

 frequently not adherent, the surface is but feebly .encrusted 



and has only a famt tinge of colour ; there is no keel or furrow, 

 and the free zooecia are^qnite cylindrical without a clearly defined 

 distal zone. The statohlnsfc pt-o ^zor^^r ^„v„-„i.i„ mi -.*'., ^ 



distal zone. The statoblasts are very variable. Those adapted for 

 floating resemble Allman's fig. 7 on his plate v, or Kraepelin's fig. 

 139 on his plate ni Sometimes, however, the zooecia are recum- 



fwT ^°/"^^^« ^a^- ?■ Under certain conditions either of 

 these two phases may pass into the forms referred to by Allman as 



statohil ^^'.7''^ '^''''^^"iS"^^"^"' ^^^' i^ ^^^^ '^^^^^^ floating 



and t If +^ T' "^".v^"^ ^^ ^°^* *^°^g^ -o* i^^ll instances 



and have the irregular outline of Kraepelin's fig. 140 on pi. vii 



1.U JT''^"''^^- } ^^^^ ^^^^^ specimens in which different 

 parts of the same co ony could be assigned to the three different 

 torms, while intermediate staaes wprp Tint oT.co^+ 



occurrence 



»ii_ , , , - — ^^ ^xi^ viiiLcxciit uiiases is mieresting. 



on wV I ir- ° ^ ^""^^ .^r^'^ °^ *^« ^^^^^ S^rf^CeS of bricks 



orblwi, I'"'"^ If considerable area but very little space above 

 whi wT' '""'' *?i! ^?^^' °^ ^^^^^^ ^^'^^ °^ the shells of Paludina,^ 



here oi.T'v^'fl^"^' "If* ^' ^^^'^^ ^^ commoner in Calcutta, 

 here occurs chiefly on the stems of water-plants, especially of 



grasses grow 

 roots of Pifiii 



Snonler^.Tv;'^'"'''^^'"'' ^1^1^^^% ^rm the support of the 



SponSs atd Se kr '■^ ^"f.i '^•. ^^^^^'^^^^^ ^^d it is^ when the 



foS to und/riff '''''' !?*i^' ^°^^^ *«^^*^^^ *l^^t tl^e latter is 

 .^«1 ^,„!?1'T. '^'^ ,^^odifications which change it into the 



fungosa and coralloides. As the 



ws rou 



» Never on th^srorXS^'Thich^Tf '^ -a.p.n„,a. 

 are naove frequently carried Cr the'SoHu oot o^lT watTr''""'' "'"' '"' 



