458 MR. A. W. WATERS ON 



34. The Marine Fauna of British East Africa and Zanzibar, 

 from Collections made by Cyril Crossland, M.A,, B.Sc, 

 F.Z.S., in the Years 1901-1902. Bryozoa *— Cheilo- 

 stomata. By Akthur Wm. Waters, F.L.S., F.G.S.f 



[Received March 13, 1913 : Read April 22, 1913.] 



(Plates LXIY.-LXXIII.J and Text-figures 79-82.) 



Index. 



Systematic : Page 



Srettia tropica, sp. n 465 



Synnotum pemhaensis, sp. n 465 



S. contorta, sp. n 466 



Sicellaria chualcensis, sp. n 467 



Stirparia zanzibariensis, s]). \\ 469 



S. dendrograpta, sp. n 470 



Scrupocel laria tvasinensis, sp. n 479 



Yittatioella elegans, var. Zanzibar iensis, nov 485 



Cellar la gracilis, \ ax. tessellata, wov 495 



C. wasinetisis, sp. n 495 



OstJiimosia zanzibariensis, sp. n 508 



Smittina sp 514 



Lepralia tuasinensis, sp. ii 516 



Petralia chuakensis, sp. ii ..., 518 



F. vultur, \aY. armata, nov. 518 



Mhyncliozoon profimdum, ya.Y . laminatum, nov 523 



Adeonellopis orosslandi, sp. n 531 



Scrupocellaridse 472 



Catenicellidae 483 



Cellaria 493 



Scliizoporella 505 



Cellepora 509 



Lagenipora 510 



Lepralia 515 



Myriozoidea 520 



Retepora 524 



The collection made by Mr. Cyril Crossland in the neighbour- 

 hood of Zanzibar contains 76 species or varieties of Cheilostomata, 

 and all are from shallow water, in fact with the exception of two 

 are from 10 fathoms or under ; so that, for a purely shallow-water 

 collection, it is a very large one. 



Points of Special Interest. 



(1) In Stirparia the first zooecium of a tuft has the character 

 of a primary zooecium (p. 470). 



* [In view of the difference of opinion as to whether this Phylum should he 

 called Bryozoa or Polyzoa (see Proc. Linn. Soc. 1911, p. 61) I have not interfered 

 with the preference of the author. — Editoe.] 



t Communicated by Cyril Ceossland, M.A., B.Sc, F.Z.S. 



X Vov explanation of the Plates, see p. 532. 



