PERSICULA. 37 



M. PORCELLANA, Gmeliii. PL 10, fig. 13. 



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

 gular spots. Length, *65 inch. 



Venezuela. 

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



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

 distant chocolate spots. Length, '5-*75 inch. 



Laguayra, Venezuela. 

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



Whitish, tesselated with rows of chestnut spots, shaded with 

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



Grenadines, West Indies. 



This is the M. guttata of Sowerby, not Dillw. or Swains., arid 

 the M. maculosa of Reeve, not Kiener. 



M. INTERRUPTE-LINEATA, Muhlf. PL 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 M. inter rupte-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. PL 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. 



M. 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. mvraliS) Hinds (fig. 23), is a synonym. 



