GENERA AND SPECIES. 



I 39 



Siphonodentalium. (DENTALIID^.} Plate xv. 

 184. lofotense, in. shell tapering, base with 4 notches. 



Skenea. (SKENEID&. 

 434. planorbis, 



Plate xxiv. 

 in. umbilicus 



a wide funnel 

 interior of the spire. 



showing the 



Solecurtus. (SOLENIDsE.) 

 146. candidus, 2 in. x ^ in. 

 150. antiquatus, 2% in. x i in. 



Plate xiii. 



yellowish white, cardinal teeth blunt. 



chalky white, cardinal teeth jagged at their 

 crowns. 



Solen. (SOLENIDJE.) Plate xiii. 

 152. pellucidus, ij in. x f in. shell curved and thin. 



153. 



154. 



ensis, 

 siliqua, 



155 vagina, 



3f in. x J in. shell curved and tubular. 



8 in. x i in. shell straight and tubular, 

 cardinal and lateral teeth. 



hinge with 



shell straight and tubular, hinge with one 

 tooth in each valve. 



Sphserium. (CYR^ENIDM.) Plate vii. 



81. corneum, 



82. lacustre, in. x 



yellowish horn-colour with faint concentric 

 bands. 



. yellowish white or ashy grey, thin, com- 

 pressed, sides truncated and sloping from 

 dorsal margin. 



83 ovale, f in. x f in. drab or yellowish, anterior side rounded, 

 posterior side truncated. 



84. rivicola, ^j in. X ^ in. horn-colour with dark concentric bands and 

 deep ridges, ligament very conspicuous. 



Spirialis. (LIMACINID&.} 

 583. retroversus, $ in. 



Plate xxx. 



shell silvery, almost transparent, and very 

 thin. 



Stilifer. (EULIMIDJE.) Plate xxv. 

 467. turtoni, J? in. spire in two parts, a cylinder and a point. 



Succlnea. (SUCCINEID^E.) Plate xx. 



317. virescens, 

 315. pfeifferi, 

 314. oblonga, 



313. elegans, 



in. greenish yellow, pillar whitish. 

 in. whorls 3, shell curved at the ends. 



in. light horn-coloured, whorls 4, sutura 

 oblique and very deep. 



in. oblong, amber-coloured, whorls 3 or 4, 

 suture very oblique but not deep. 



