17 



1 O vulum angulosum, Sower bij, Sp. Con. Ovulum f. 6 to 9. 



11 • • — triticeum „ „ f. 35. 



1 2 Frumentum „ „ f. 37. 



13 stfiatulum „ „ f. 38. 



14 eniarginatum „ „ f. 54, 55. 



15 gibbosum „ „ f. 28 to 31. 



16 obtusum „ ,, f. 34. 



17 Seminulum „ „ f. 40. 



18 Formicarium „ „ f. 39. 



19 Secale „ „ f, 36. 



20 Spelta „ „ f. 43. 



21 intermedium „ „ f. 32, 33. 



22 birostre „ „ f. 4 1, 42, 44, 45. 



23 longirostratum „ „ f. 46 to 48. 



24 Volva „ „ f. 56, 57. 



25 aciculare „ „ f. 49 to 52. 



26 patulum „ „ f. 58. 



27 hordeaceum „ „ f. 53. 



28 rufum. Shell oblong, acuminated at the pos- 

 terior extremity, red ; outer lip thickened, paler ; 

 aperture narrow, broader anteriorly ; columella with a 

 depressed longitudinal line within, and a slightly spiral 

 posterior plait; length 0"5, breadth 0"15. Varies in 

 being wholly of a pale colour. A few specimens were 

 dredged in sandy mud at a depth of seven fathoms in the 

 Bay of Caraccas by Mr. Cuming. Conch. III. CjjprcBdce, 

 f. 58. 



29 Avena. Shell oblong, red, extremities rather 



acuminated, back somewhat gibbous, very finely trans- 

 versely striated : outer lip thickened, paler ; aperture 

 narrow, broader at the anterior, and notched at the pos- 

 terior extremity ; columella with a single plait poste- 



