54 CONCHOLOGIA CESTRICA. 



Sub-genus ACICULA, Risso, 1826. 



Animal of Acicula, enlarged. [Reeve.] 

 Pig, 96, 



Shell slender, elongate, turreted, imperforate, thin, 

 polished ; whorls 6 or 7, the last rounded at base ; 

 columella slightly twisted, truncated at base, aperture 

 oblong, peristome simple, acute. 



A. acicula, MULLER. 



Buccinum acicula, Miill., Hist. Verm., II., 



A.acicula, 

 enlarged. \ J J A 



[B. & B.] 



Fi g- 97, Shell very delicate, transparent, bluish- 

 white, cylindrical ; whorls 7, the last one 

 more than half the whole length ; aperture 

 oblong-ovate. H. 5, W. ij^, mill. 



Station, green-houses, and nurseries. New 

 Garden, Chester County ; rare. 

 OBS. An exotic species, sometimes imported with 

 nursery and green-house plants. 



Sub-genus LEUCOCHILA, ALBERS, ET MARTIENS, 



1860. 



Animal of LeucocJiila pentodon. 



Fig, 98, 



Shell cylindrical-ovate, rather obtuse, shining, pel- 

 lucid ; whorls 67 ; aperture semi-oval, mostly narrowed, 

 by folds ; peristome thickened, and reflexed. 



Animal, with four distinct tentacles. 



