BRYOZOA FROM ZANZIBAR, 485. 



curved on tlie proximal eclge ; on the other hand, it is not so 

 large as that of V. huskei W. Th. These are all nearly related, 

 but the difference in the operculum and the number of tentacles, 

 besides other characters, indicate tliat the}^ must be separated. 



There are often many ovicelligerous zocecia in one node. In 

 one specimen there are two cases of a node having six ovicelli- 

 gerous zocecia in one continuous line, and in both cases a lateral 

 zooecium grows from the side of the unjointed node. In the 

 ovicelligerous zooecia the avicularia near the oial aperture are 

 directed forwards instead of laterally, as in the other zooecia. 

 In the Tertiary beds of Cui-dies Creek, Australia, there is a form 

 with long biserial nodes which I described as Catenicella inter- 

 nodia* , but for which MacGillivray has since made the genus 

 Ditaxipora ; also from tlie North Italian tertiaries I have described 

 two forms with long biserial nodes as C. septentrionalisf and 

 C. contimta, of which continua is probably Vittaticella, but, 

 septentrionalis will require a new genus, so far as we ca,n see at 

 present. 



Among recent forms no long nodes have previously been 

 described, but in the specimen from Madeira, which Norman 

 considered to be C. contei Aud., there are two zooecia with ovicells 

 following one another in an internode. Long ovicelligerous nodes 

 are also found in C'ateiuiria diaphana B. (see p. 482). 



The ovaria commence at the proximal end at one side, whereas 

 the testes are near the distal end to one side. There are ciliated 

 embryos in the ovicells, and below the ovicells there are several 

 fleshy bands or tubes by which, no doubt, material for growth is 

 transferred to the ovicell. 



Loc. Bass's Strait, 47 fath., Banks' Peninsula, Algoa Bay, 

 Port Dalrymple ; Tasmania (i?.), Victoria [AlacG) ; Sagamibai, 

 Japan [Ort); Gulf of Manaar, on floating oj^ster-cages (Th.); 

 Arafura Bay (Brit. Mios.). Prison Island, Zanzibar shore (503) ; 

 Has Osowamembe, Zanzibar Channel, 10 fath. (504), collected by 

 Crossland. 



Vittaticella elegans, var. zanzibariensis, nov. (PI. LXV. 

 figs. 8-11.) 



Zoarium about 40 mm. high, with the branches curved over. 

 Zocecia elongate ovoid, surface smooth or slightly papillose ; large 

 lateral avicvdaria with a large pore at the base, in this respect 

 differing from the type. There are on the dorsal surface near 

 the distal end, and often resting on the large avicularia, two 

 minute oval avicularia or an oval raised tubular opening. The 

 radicles arising from the dorsal surface form a thick bundle. 



No ovicells are known. 



It is very similar to V. elegans B., but the larger beaked 



* "Foss. Chil. Bry. from S.W. Victoria," Quart. Journ. Geol. Soc. vol. xxxvii. 

 p. .318, pi. xvi. figs. 78, 79 (1881). 



t " North Italian Bryo/.oa," Quart. Journ. Geol. Soc. vol. xlvii. p. 5, pi. i. figs. 1-8 

 (1891). 



33* 



