1904.] FROM EAST AFRICA AND ZANZIBAR. 285' 



this issues a much thinner tube, about 5 mm. long and 1'5 broad^ 

 with muscular walls. After a sharp constriction it continues 

 again for about 5 mm., and enters the liver rather far back. In 

 the large specimen the posterior part of the tube is much the 

 same size as the anterior. In the smaller ones it is considerably 

 more inflated. A purplish gland lies under the first- mentioned 

 thick portion of the above tract, but is not fused with it as in the 

 other Phyllidiadae. 



DOTONIDiE. 

 DOTO AFRICANA, Sp. 11. 



One small specimen found on a Sertularian at Chuaka. The 

 notes on the living animal are as follows: — "Ground-colour of 

 bodjr grey-black with two white stripes ; sides of foot also white. 

 Rhinophore-sheaths large, also grey- black. Six pairs of cerata, of 

 which the third is the largest and the fifth and the sixth very small. 

 Cerata yellow-brown, with dark blue tips to the tubercles." 



The preserved specimen is 3 mm. long, and has retained its 

 coloration faii'ly well, though the difierence between grey-black 

 and dai-k blue is not visible. The cerata ai'e relatively large, the 

 tallest being nearly 2 mm. high. They are of the shape usual m 

 the genus. The third pair bears sixteen rounded tubercles, that 

 is four rows of foiu- each ; the others have fewer tubercles 

 according to their size, and the sixth pair are simple warts. The 

 rhinophore-sheaths are large and stout, not much bi'oader at the 

 top than at the bottom, the edges of the cavity smooth and not 

 turned outwards. The rhinophores are completely contracted 

 within the sheaths. In front of each sheath lies a tubercle or 

 short ridge, pointing towards the edge of the oral veil, which is 

 large and cii'cular. The anal papilla is yellow, and lies between 

 the first and second cerata on the right side. 



The delicate and transparent jaws, though hardly visible, appear 

 to be of the generic type, with smooth edges. The radula consists 

 of a single row of about 70 teeth, of horseshoe-shape, but some- 

 what more rectangular than usual. The central cusp is well 

 developed, and there were faint indications of two or three 

 denticles on each side of it. 



This does not appear to be Bergh's Doto indica or his Doto sp. 

 (Mai. Unt. 1894, vi. 1, p. 13), and it seems necessary to create a 

 new species, though in the case of so small an animal there must 

 always be some doubt whether it has assumed its mature 

 and specific form. The most distinct character is the presence of 

 two tvibercle.s in front of the rhinophores. Cf. the ridges in 

 D.fragilis and 2>innatifida. 



^OLIDIAD^. 



Fiona ? pixnata (Eschscholtz). 



[Eschsdioltz, Zool. Atlas, 1829, p. 14 ; Bergh, Journ, Mus. 

 Godefir. Heft ii. 1873, pp. 87-88; id. Beitr. z. Kennt. der Aeoli- 

 diaden, i. p. 605.] . 



One specimen was found on a dead nautilus-shell which was 



