132 



CONCHOLOGY. 



F, curvirostris. 

 F. inconstans. 



F. sinistralis. 

 F. articulatus. 



F. pleurotomarius. 

 F. harpularis.* 

 F. cinereus.* 



F. fluviatilis * 



F. (lecemcostatus.* 



F. bicolor.* 



7. Genus Pyrula. PI. XT. 



Animal. Unknown. 



Shell. Pyriform on account of the depression of the spire, 

 which distinguishes it from ttje Fusus ; the canal conical, very 

 long or middling, sometimes a little sloped ; aperture oval, rather 

 large ; the columella edge somewhat excavated, entire and tren- 

 chant ; an operculum. Found in the Northern and American 

 seas. Twenty-nine living species. Six fossil. 



Pyrula salmo. 

 P. carica. 

 P. candelabrum. 

 P. tuba. 

 P. melongena. 

 P. ficus. 

 P. spirata. 

 P. elongata. 

 P. bezoar. 

 P. angulata. 

 P. nodosa. 

 P. abbreviata. 

 P. deformis. 

 P. lineata. 



Pyrula plicata. 

 P. canaliculata. 

 P. perversa. 

 P. bucephala. 

 P. vespertilio. 

 P. reticulata. 

 P. ficoides. 

 P. spirillus. 

 P. ternatana. 

 P. rapa. 

 P. galeodes. 

 P. squamosa. 

 P. citrina. 

 P. neritoidea. 



P. papyracea.' 



8. Genus Strnthiolaria. PI. XI. 



Animal. See Triton, hereafter. 



Shell. Ovate ; spire prolonged ; aperture sinuous, terminated 

 at the base by a very short, straight canal : columellar edge callous ; 



