BRYOZOA FROM ZANZIBAR. 467 



Osbnrn, " Biy. of Wood's Hole Region " Bull. Bur. Fish. vol. xxx. 

 p. 22L pi. xxi. fig. 15 (1912); Nordgaard, " Die Biy. des West. 

 ISToiwegens," Die Meeresfauna vou Bergen, p. 76. 



A few zooecia were seen fi-om Wasin. 



Loc. As far north as the Lofoten Islands ; Atlantic ; British ; 

 Mediterranean; California; Australia; S. Africa (^1. IF. IF. co^^.). 

 Wasin, Brit. East Africa, 10 fath. (501), collected by Crossland. 



Beania spinigera MacGillivray, 



Diachoris spinigera MacG. Trans. Roy. Soc. Yict. vol. iii. 

 p. 165, pi. ii. fig. 12 (1859); Prod. Zool. Yict. dec. v. p. 32, 

 pi. xvi. fig. 3 ; Waters, Ann. Mag. Nat. Hist. ser. 5, vol. xx. 

 p. 94 (1887). 



There are some small specimens from Wasin which correspond 

 in most particulars, though the avicularia are materially smaller 

 than the type, more like those of B. intermedia Hincks. There 

 are threo terminal spines and usually 5 6 delicate lateral spines. 



Log. Victoria (Australia) ; New South Wales. Wasin, Brit. 

 East Africa, 10 fath. (501), collected by Crossland. 



Beania mirabilis Johnston. 



For synonyms see Miss Jelly's Catalogue, and add : — 

 Beania mirahilis Hincks, Ann. Mag. Nat. Hist. ser. 3, 

 vol. viii. p. 36 (1862); op. cit. ser. 5, vol. xiii. p.. 357 (1884); 

 op. cit., ser. 5, vol. xix. p. 215 (1887) ; Waters, Journ. Linn. Soc. 

 Zool. vol. xxvi. p. 17, pi. ii. fig. 1 (1896); Jullien & Calvet, 

 ' Bry. prov. des Camp, de I'Hirondelle,' p. 38 (1903) ; Thornely, 

 Ceylon Pearl-Oyster Fisheries, vol. iv. Suppl. Rep. xxvi. p. 109 

 (1905): Robertson, " Non-Incrust. Chil. Bry." Univ. of Calif. 

 Publ., Zool. vol. ii. p. 276, pi. xii. figs. 63, 64, & fig. in text (1905). 

 Loo. Northern ; British ; French coasts ; Atlantic (Jtoll. ^ 

 Calv.); Mediterranean; Ceylon (y/?.) ; Burmah (i/^.) ; Australia; 

 Pacific coast of N. America yRoh.). Meweni Bay, Zanzibar (510), 

 collected by Crossland. 



Beania has been considered to belong to the Flustridfe by 

 Busk, and to Bicellaridae by Levinsen, but the large embryo 

 found by me in B. magellanica* seems to indicate the proba- 

 bility of the genus standing elsewhere. There are 20-26 

 tentacles in Beania, whereas in Bicellaridse and its allies there 

 are usually fewer, 12-18. B. magellanica B. has 23-26 ; B. hirtis- 

 sima Hell., 20-30; B. hyadesi Jull., 20; B. qiiadricornuta H., 

 23 (ir.); B. spinigera MacG., 20; B. mirahilis Johnst., 20. 



BiCELLARIA CHUAKENSIS, Sp. n. (PI. LXVIII. figs. 7, 8.) 



The zoarium arises from a long, erect primary with radicles ; 



it frequently anastomoses, forming a colony about 7-8 mm. high. 



Tiie primary zooecium has an elongate area with nine short 



* Ann. & Mag. Nat. Hist, ser. 8, vol. ix. p. 493 (1912). 



Proc. Zool. Soc— 1913, No. XXXII. 32 



