18 MARCH NELL A. 



M. GOODALLII, Sowb. PL 5, fig. 62. 



Very ventricose, obtusely angulated behind ; yellowish brown, 



with a few large, rounded, whitish spots. Length, 1 inch. 



Senegal. 

 M. AURANTTA, Lam. PI. 5, fig. 63. 



Orange-red, darker at the sutures, where it is painted with 

 short white streaks ; surface irregularly mottled with white, 

 often forming an interrupted band of ver}^ irregular large white 

 spots in the middle. Length, -8-'9 inch. 



. W. Africa, and Cape Verd Is. 



Narrower than M. irrorata, yet in one specimen before me the 

 zig-zag painting of that species is partially repeated. 



M. PYRUM, Gmelin. PI. 5, figs. 70, 71. 



Body-whorl with an obtuse shoulder; white, irregularly marked 

 with gray or pink blotches, which are longitudinally shaded on 

 one side b}^ chestnut or chocolate color ; outer margin of lip 

 marked by a series of brown dots. Length, 1-25-1-5 inches. 



Senegal. 



M. intermedia, Sowb. (fig. 71), is probably a white or bleached 

 specimen of this species ; it is probably Kiener's var. alba of 

 nubeculata the name by which Lamarck designated M.pyrum. 



M. MOSAicA, Sowb. PI. 5, fig. 72. 



Shell white, with faint zig-zag longitudinal stripes of gray, 

 over which are about nine revolving series of short square spots. 



Length, 1 inch. 



West Africa. 



Very closely allied to M. pyrum, and may be only a variety 

 of it, differing in the spots added to the painting of that species. 



M. ROSEA, Lam. PI. 5, figs. 73, 74, 75. 



Smaller than M. pyrum, the shoulder obscure ; sometimes 

 similarly painted, but the spots and shading smaller and more 

 numerous; occasionally the ground color is grayish pink, upon 

 which the spots are white, with chocolate shadings ; spire and 

 shoulder frequently darker in color ; lip-margin marked outside 

 with a series of brown spots. Length, -9-1-1 inches. 



Cape of Good Hope. 



A critical species ; perhaps only a small var. of the preceding. 

 I am unable to to separate M. piper ata. Hinds (fig. 74), from it. 



