444 MURICID.E. 



final rib, projects at a little distance from the outer lip, the 

 intervening area is decussated by longitudinal raised lines 

 or narrow wrinkles. Body slightly longer than the spire, 

 its basal declination gradual, yet rounded : spire of about 

 six rather ventricose moderate sized volutions, that are 

 profoundly divided by a simple suture. Mouth filling half 

 the total length, oval, produced below in a rather narrow 

 canal, that is almost equal to a third of the length of the 

 aperture, and dilates anteriorly. Throat with numerous 

 spiral raised lines, that are not so broad as the intervening 

 sulci. Outer lip acute at the edge, simple, not much 

 arched, not at all expanded. Pillar lip reflected, but 

 appressed ; peculiarly incurved, with one or two subgra- 

 nular projections at the upper corner, and at the com- 

 mencement of the canal, between which the surface appears 

 to be slightly and finely corrugated. Length seven lines ; 

 breadth three lines and two thirds. 



A unique sjiecimen of this remarkable shell was found 

 by our indefatigable friend Dr. Farran at Portmarnock, 

 and was communicated by him to Mr. W. Thompson, 

 who described and figured it. Although when taken it 

 appeared to be fresh and to exhibit traces of an animal, 

 all our knowledge of its nearest allies {Triton carduus and 

 other shells constituting the genus Hindsia of Adams) 

 would lead us to refer its original habitat to a tropical 

 province, most j^robably the West Indian seas. 



SPURIOUS. 



CoLUMBELLA PICTA, TurtoU. 



Purpura pida (not of Scacchi), Turt. Zool. Joiim. vol. ii. p. 365, pi. 13, f. 8. 

 Buccinuni pidiim, Fi-eming, Brit. Anim. p. 344. — Brit. Marine Conch, p. 216. 

 „ p'llchdltim, KiENER, Coquillcs Vivant. Bucc. p. 51, pi. 1!), f. Gii; trans. 



Storer, p. 59. 

 Nassa picta, Bbown, lUust. Conch. G. B. p. 5, pi. 5, f. G5. 

 Columbdla pulcJicUa, Sowerby, Thcsaur. Conch, vol. i. p. 131, pi. 39, f. 121, 



122. 



A comvion West Indian shell ; introduced hy Turton as dredged 



