96 Transactions of the South African Philosophical Society. 



5. M. vexillifera, B. 



M. Japon. 



6. M. papillosa (de Filippi). 



M. Japon. 



7. M. biicephala, B. 



M. Stamens e. 



8. M. capucina, B. 



M. Philippin. 



9. M. pilosa, Pease. 



M. Pacific. 



10. M. leonina (Gould). 



M. Pacific. 



11. M. australis, Angas. 



M. Pacific. 



Melibe rosea, Bang. 

 Bang, Man.— des moll., 1829, p. 129. pi. iii., fig. 3. 



PL IX., figs. 1-12. 



At Woodstock Beach, Table Bay, 10 individuals of this form were 

 procured, of which 2 were dissected. 



They varied in length from l - 5-3"8 cm. The largest was very 

 hardened, the cowl-shaped head quite contracted, and all the papillae 

 of the back fallen off. Two other specimens were 3-2 cm. long by a 

 breadth of the body proper of 0-8 and a height of 1*2 ; the head 

 11 mm. broad and 11 mm. long on the upper side, beneath merely 

 3 mm. long; the stalk of the rhinophores 2 mm. high, the epinotidia 

 of the back up to 8 mm. in height ; the breadth of the foot 4, the 

 length of the tail 6 mm. The animals were uniformly whitish ; living 

 they varied according to Prof. Gilchrist from white to yellowish red, 

 usually the latter. 



In the form of the body the animal agrees with other Melibes. 

 The large coiul- shaped head with a little thickened refolded edge 

 provided with 2-4 close-set series of cirrhi (fig. 1), which are 

 conical, somewhat constricted at the base, up to 0*6 mm. high, 

 but often contracted, especially the innermost ; the outside of the 

 capuchin shows under a strong lens (fig. la) very fine nodules 

 formed of small groups of glandular cells ; the thickness of the 

 cowl up to 1 mm. ; it showed the muscular bands, circular, and 

 especially longitudinal, very distinctly shining through ; the inside 

 of the cowl quite the same as the outside ; median in the bottom of 

 its cavity somewhat beneath the centre, the roundish mouth with 

 circular prominent lip, the diameter of the whole region 2-5 mm. ; 



