92 



? Turbo carinatus Mühlf. Berl. Schrift. 1829. p. 

 209. t. 1. f. 5. 



? Strombus turboformis Mtg. 1. c. p. 110. t. 30. 

 f. 1.1 



? Cerithium ambiguum F. & H. 1. p. 200. 



? Cerithium minutum Brown 111. t. 48. f. 27. 

 Hab. Jamaica (Ad.) Haiti (Koch.) 

 Cf^ 221. Cerithidea min^or Mörch. 



■ T, abbreviata, crassa, badia, fascia mediana et basi 



alba, spiraliter subtilissime striata; anfr. angulati; sutura 

 ad aperturam adscendens, lii\a marginata; costa3 argutas 

 leviter arcuatre 15 (interdum 22) in anfr. ult. lira infra- 

 mediana terminata; labro subexpanso intus marginato 

 extus subvaricoso. 



Long IY4 mm; lat. 272 ^i^"^- 



Potamides minutus Dkr. in Coli. Riise. (non Gabb.) 



Hab. Cuba (Riise.) 



C. iostoma Pfr. quoad forniam, sed testa minuta. 

 * 222. Cerithidea turrita Stearns. 



„Sh. small, elongately conic, rather delicate, pur[)lish 

 white to dark purpIe, with a Avhitish revolviiig band on 

 the middle of the whorls, inconspicuous except in the 

 aperture ; spire gradually tapering ; whorls twelve, mo- 

 derately convex, Avith 16 — 20 [)rominent, smooth, equi- 

 distant, whitish longitudinal ribs, which terminate abruptly 

 a little below the periphery of the last Avhorl, with a 

 Single narrow, revolving keel below; suture deeply grooved; 

 anterior portion of body whorl smooth or marked only 

 by incremental lines; aperture rounded above, subqua- 

 drate below ; onter lip eifuse ; externally thickened : 

 labium auteriorly prolonged, angulated; in some speci- 

 mens the peristome is contmuous." (Stearns.) 



Long. 0,5,, lat. 0,j6 poll. spm. maj. 



Long. 0,33, lat. 0,jj poll. spm. min. 



Cerithidea turrita Stearns Proc. Bost. Soc. XV. 

 1872. p. 24, 



