ACHATINA. 295 



cose towards the base, about two-thirds the length of the 

 shell. Aperture narrow ovate, acutely prolonged poste- 

 riorly ; lip simple ; turning up the coluniella it becomes 

 thickened, and winds into the aperture in the form of a 

 tooth-like lamella. 



Length one-tenth of an inch ; breadth one-thirtieth of 

 an inch. 



GEOGRAPHICAL DISTRIBUTION. Found in Florida, 

 among small shells drifted in the sand. It is also found 

 in Cuba. 



REMARKS. There is yet much uncertainty about this 

 beautiful little shell. Prof. Adams, who found this or a 

 similar species in Jamaica, thinks it is most likely a marine 

 shell, which is by no means improbable, and compares it 

 to a minute Melampus drawn out in the direction of its 

 axis. Dr. Pfeiffer removes it from the genus in which 

 he first placed it, and places it in his genus Tornatellina, 

 Amid this uncertainty, we allow it to remain under the 

 name it bears in the tables of the first volume. [G.] 



GENUS GLANDINA, SCHUMACHER. 



GENERIC CHARACTERS. 



ANIMAL. Body elongated, narrowed anteriorly ; ten- 

 tacles four, long, the posterior ones having the eye spots 

 on the posterior face, behind the tips, which are de- 



