xxxvn 



Oblonga, 260. 

 Eulimoides,f. 12. 

 Rissoides,/, 9. 

 Turrita,f. 10. 



CYCLOSTREMA. 



Zetlantica, 158. 



SKENEA. 



Depressa, 159. 

 Serpuloides, 15&,/. 44. 

 Divisa, 159. 



MARGARITA (y). 

 Vulgaris ( Turbo Mar- 

 garita, 169). 



(7Vr6o C. 170). 



LACUNA, p. 256. 

 * Spire lateral, very 



slightly produced. 

 Pallidula (Natica P. 



150 (a),/. 85. 

 Montacuti (Natica La- 



cuna, 150). 



vex ; suture oblique, distinct in the last whorls ; aper- 

 ture one fourth of the entire length, almost uniform 

 from the projection of the tooth-like plait on the upper 

 part of the columella. li . . i, lines. . Guernsey. Allied 

 to Producta of Gould. 



(y) Conical, moderately elevated ; whorls few, sub- 

 inflated ; aperture rounded, imperfect posteriorly ; lip 

 sharp ; umbilicus deep ; operculum multispiral, the 

 nucleus central. 



(s) Variety ? Patula,/. 83. Spire all but flat, umbili- 

 cus obsolete, columella groove broad but very shallow ; 

 aperture patulous ; epidermis very distinct. 



