APPENDIX. 019 



Sub-gen. ericusa, H. and A. Adams (Scaphella, Gray, not 



Swains.). 



Mantle-lobes moderately expanded, not covering tbe spire ; 

 suture simple ; spire not crowned. 



fulgetrum, Sow. papillosa, Swains. 



Sub-fam. SCAPHELLIN^. 



Teeth linear, base angularly diverging, with a single conical 

 apex. Tentacles elongated, united by a large veil ; eyes sunk at 

 the base of their hinder edge. Mantle enclosed ; siphon with 

 distinct ear-like lobes. Operculum none. 



Genus SCAPHELLA, Swainson (Amoria, Gray). 



Shell fusiform ; spire conic, nucleus small, spiral ; suture of 

 whorls with a callous edge ; aperture elongate ; pillar with five 

 oblique plaits in front. 



lineata, Leach. Turneri, Gray. 



maculata, Swains. undulata, Lam. 



marmorata, Swains. zebra, Leach. 

 reticulata, Reeve. 







Vol. i. p. 172. Genus VOLUTOMITRA. 



This genus has been included by Dr. Gray in the family Vo- 

 lutidce, in which he has constituted a sub-family, Volutomitrina 

 to receive it. 



Sub-fam. VOLUTOMITEIN^. 



Teeth with a narrow, angular, diverging base, and a single 

 conical apex. Tentacles subulate, close together at the base ; 

 eyes on tubercles above the base. Mantle enclosed ; siphon 

 simple at the base. Operculum none. 



