13 Dr. P. P. Carpenter on new Forms of Mollusca. 



et dimidio, rapidissime augentibus ; vertice vix conspicuo ; anfr. 

 nit. antice valde porrecto ; regione colutnellari incurvata ; labio 

 valido ; axi baud rimata ; epidermide tenui, rugis incrementi or- 

 nata, spiraliter baud striata. Long. '1, long. suir. '1.5, iat. *95, 

 div. 140. 



Hub. Nceah Bay ; rare (Swan}. 



246 



