316 HELICID^. 



a. Tentacles distinctly four. (Pupa.) 



1. PUPA MARITIMA, Pfeiffee. 



Plate LXVIII. 



P. testa alba, cylindracea, obtusa, dense et leviter striata ; 

 anfractibus numerosis, planis ; apertura sub-ovali, dentata ; 

 labro incrassato, sub-reflexo ; basi compresso, sub-carinato ; 

 striis confertis, ad axim confluentibus ; axi impresso, imper- 

 forato. 



SYNONYMS AND EEFEKENCES. 



Pupa viaritivia, Pfeiffee, Wiegm. Archiv, 1839, I. 353 ; 

 Monog. Helic. Viv. II. 322. 

 KiJSTEE, ed. Cliemn. tab. 9, figs. 10-13; 

 LisTEE, Icon. 1. c. t, 5s8, 1'. 49. 



DESCRIPTION. 



Animal -whitish, brownish, smoky, or nearly black, 

 darker on the back and upper part of head. Body 

 finely granulated, the granules arranged in regular lines 

 longitudinally, making the surface look as if minutely 

 and longitudinally furroived. Tentacles rather short, 

 slender, bulbous at the extremities. 



Shell white, moderately thick, cylindrical, obtuse at 

 both extremities ; whorls from eight to twelve, of un- 

 equal width, separated by well-defined, though not deep 

 sutures, flat, with numerous sub-oblique strioe, sometimes 

 amounting to fine ribs ; aperture sub-ovate, white, with a 

 minute, deep-seated tooth on the columellar margin, and 

 another at the base, indicating the position of the im- 



