THE NAUTILUS. 77 



Cypr^ea cruenta var. violacea, var. nov. 



There are two specimens of cruenta, one typical in shape, the other 

 stunted, broader, somewhat depressed, with the strong teeth of var. 

 coloba Melvill, but each having a large, bright violet patch on the 

 base. The brownish-violet spots on the sides are also unusually 

 bright. I propose the above name for such specimens as possess the 

 violet basal blotch. 



Cypr^ea caput-serpentis var. 



Base and sides normal, back almost pure white but very faintly 

 tinged with blackish on which the snow-white spots are just per- 

 ceptible, the brown of the sides merging a little into the white of the 

 dorsum, showing a narrow border of the typical white spots; ex- 

 tremities of the usual smoky white. The white back accentuated by 

 the dark sides is curiously suggestive of a bald head. 



Another specimen of caput-serpentis has the dorsal surface a 

 lighter brown than the sides, and sparsely spotted and blotched with 

 whitish-brown. 



There is also a dwarf specimen : Long. 20, lat. 13, alt. 10 mm. 



Cypr^ea caurica var. 



Back light yellowish-brown with three brown bands, rather pro- 

 fusely sprinkled with small brown spots. Base and sides creamy 

 white, striated with fine pure white lines. Sides with a few large 

 dark-brown purplish-shaded spots. 



Cypr^ea Isabella var. fulva, var. nov. 



Uniform yellowish-brown, only very faintly tinged with orange at 



the extremities, base creamy-white. 



Length 30^, diam. 16 mm. (Coll. Ferguson.) 



Length 35, diam. 19 mm. (Coll. Acad. Nat. Sci.) 



There is another specimen of Isabella the same color but with the 



normal longitudinal black markings and orange extremities. 



Cypr^ea carneola var. adonis, var. nov. 



Base pure white, extending a little up the sides, above which the 

 sides are light yellowish-brown, thickly irrorated with minute white 

 spots. Dorsum whitish, banded with four faint orange bands. Sides 

 thickened. Teeth yellow, turning to orange anteriorly. More pyri- 

 form in shape than typical carneola. 



There is a diversity of opinion respecting this shell among our 



