100 PHYLLONOTUS. 



M. ananas, Hinds, is said to resemble M. rosarium " in its 

 size and proportions, but finds its specific distinction in its 

 greater massiveness, the superior size of its upper series of 

 spines, and the absence of nodules on the interstitial ribs. Both 

 shells have a distinct fasciation of three dark bands, but our 

 species is entirely wanting in that beautiful and elegant covering 

 of striae which is so conspicuous in the fine specimen of M. 

 rosarium, in Mr. Cuming's collection." Not figured. (Mus. 

 Cuming.) 



W. G. of Africa. 



This is very probably a M. rosarium. M. bifasciatus, Sowb., 

 (fig. 255), is a variety. 



M. BRASSICA, Lam. PL 22, fig. 200. 



Shell with six to eight flat, folded varices, with serrated edges 

 becoming spinous towards the base ; a large spinous tubercle 

 arises on the shoulder of the whorls behind each varix, giving 

 the shell a somewhat coronated appearance ; on the body-whorl 

 there are occasional tubercles, two or more in a single longitu- 

 dinal series between the varices ; surface covered with fine, elevated 

 revolving striae. Light brown, whitish or pinkish, with three 

 brown revolving bands ; fimbrise of the varices and aperture 

 bright pink. Length, 6 to 8 inches. 



Mazatlan, Gulf of California. 



M. rhodocheilus, King, is described from a small specimen, 

 which is perfectly typical. M. brassica is the largest species of 

 Phyllonotus. 



M. REGIUS, Wood. PL 22, figs. 201, 202. 



The six to eight varices consist each, of a double row of ser- 

 rated spines, and the interspaces are simply covered with 

 revolving striae. Browm, more or less tinged with pink, es- 

 pecially on the varices ; aperture bright pink, deepening into 

 black on the columellar lip. Length, 4 to 5 inches. 



Panama to Mazatlan. 



M. tseniatus, Sowb., (fig. 202), Gulf of California, is the young 

 of this species. 



