PERSICULA. 37 



M. PORCELLANA, Gmeliii. PI. 10, fig. lo. 



Whitish, tesselated with close-set rows of chestnut quadran- 

 gular spots. Length, '65 inch. 



Venezuela, 

 M. KlENERIANA, Petit. PI. 10, fig. 14. 



Fawn to chestnut-color, with four white bands, on which are 

 distant chocolate spots. Length, -S-'TS inch. 



Laguayra, Venezuela. 

 M. CALCULUS, Redfield. PI. 10, fig. 15. 



Whitish, tesselated with rows of chestnut spots, shaded with 

 white, arid forming longitudinal zig-zags. Length, '4 inch. 



Grenadines, West Indies. 



This is the 31. guttata of Sowerl\y, not Dillw. or Swains., and 

 the 3f. maculosa of Reeve, not Kiener. 



M. INTERRUPTE-LINEATA, Muhlf. PI. 11, figS. 16, 17. 



Yellowish white, profusely marked with gray or chestnut spots 

 and short lines, in interrupted revolving series. 



Length, •5--75 inch. 



Liberia, West Indies, Venezuela. 



M. OBESA, Redfield. PL 11, figs. 18, 19. 



Differs from 3£. interrupte-lineata ^ in being usually larger, 



more ventricose, the revolving lines sometimes merging into 



spots, and in the outer margin of the lip possessing three spots; 



yet I think it will prove to be only a variety of that species. 



Length, •6-75 inch. 



Venezuela, Brazil. 

 M. IMBRICATA, Hinds. PI. 11, figs. 20, 21. 



Yellowish white, with revolving series of spots and lines of 

 chestnut color, usually forming a single darker interrupted band 

 on the periphery. Length, '5 inch. 



Acapulco Pacific Coast of Mexico. . 



31. Vautieri^ Bernardi (fig. 21), appears to be a young shell 

 of this species. 



M. MACULOSA, Kiener. PL 11, figs. 22, 23. 



Yellowish white, with revolving series of light chestnut spots, 

 bordered with milk-white ; there are usually two white bands, 

 upon which are larger and darker spots. Length, •4-'5 inch. 



West Indies. 



M. wuralis, Hinds "(fig. 23 ', is a synonym. 



