110 PHYLLONOTUS. 



distant revolving lirse, which become spinulose on the varices ; 



canal sub-produced ; lip lirate within. 



So. Australia. 



Said to resemble M. cristatus, Brocchi. Possibly identical 

 with M. octogonus. As Brocchi, has used the name for a fossil 

 species, this may be known as M. Angasi. 



M. OCTOGONUS, Quoy and Gaimard. PI. 30, figs. 272-274. 



Shell eight varicose, varices fimbriately spinose. Reddish 

 brown, violet and striated within the aperture. The animal has 

 a reddish mantle, sides of the foot, head and tentacles yellowish 

 with red striae, locomotive disk whitish. Length, 1-4 inches. 



Bay of Islands, New Zealand; Japan. 



M. cuspidatus, Sowb., (fig. 274), is a synonym. 



M. DIPSACUS, Brod. PL 30, figs. 277, 281. 

 Length, 1 inch. 



St. Elena, W. Columbia ; from a rocky bottom at the depth of 12 fathoms. 

 Cuming. 



Reeve has figured as M. octogonu*, Quoy, a shell which Sowerby 

 described as M. Peruvianus, (fig. 281), and which, 1 think, is the 

 same as M. dipsacus. It comes from Pacasmayo, Coast of Peru. 



M. VITTATUS, Brod. PI. 30, figs. 280, 279. 



Seven varicose, short spiny ; canal open. White with narrow 

 purple-black revolving bands. Length, *85 inch. 



Bay of Guayaquil; sandy mud, at 11 fathoms. 



M. lepidus, Reeve, (fig. 279), described without locality, does 

 not appear to me to differ. 



M. BALTEATUS, Beck. PI. 30, fig. 278. 



Seven varicose. White tinged with pink, lips pink, spines and 

 tubercles tinged with brown. Length, 1 inch. 



Philippines; on coral reefs. 



M. NODULIFERUS, Sowb. PL 30, figs. 282, 288. 



The shouldered whorls give the spire a babylonic appearance ; 

 two distant ribs revolve on the middle of the body, forming a 

 pair of fronds on each varix ; a smaller frondose rib encircles the 

 canal ; the aperture is denticulate within and, like M. cristatus, 



