BULIMUS. 283 



The epipliragm is white, pearly, and opaque ; it fills up 

 the aperture, and when pushed out by the animal, gene- 

 rally falls entire. It may be seen in numbers about 

 their winter quarters. Its outline is represented. 



7. BULIMUS L,UBRICUS, MtJLLEE. 



Plate LII. Figuke 4. 



B. testa parva, ovato-oblonga, imperforala, pellucida, cor- 

 nea, IsBvi, nitidissima ; apertura ovali ; labro simplici. 



SYNONYMS AND EEFEKENCES. 



Helix hilrica, Mullek, Verm. Hist. I. 104. 

 Bulimus lubricus, Drap. 75, pi. 4, f. 24. 



Deshayes, in Lamarck, VIII. 239. 

 Say, E.sped. St. Peter's, 11. 259. 

 Gould, Inverlebrata, 193, f. 124. 

 ^^ Adams, Vermont Mollusca, 7. 



Achaii?ia liibrica, Menke, Synop. 2d ed. 



Pfeiffer, Monog. Helie. Viv. II. 272. 

 Zualubrica, Leach, Moll. p. 114. • 

 Cionella lubrica, Jeffreys, Linn. Trans. XVI. 327. 

 Columna lubrica^ Jan, Catal. 5. 

 Styloides lutricus, Fitzingek, Syst. 105. 



For otlier synonyms, see Pfeiffer's Monograph, 

 and Gould's Inverlebrata, &c, 



DESCRIPTION. 



Animal. Head, back, and tentacles blue-black, foot 

 paler, shorter than the shell ; lower tentacles short. 



Shell small, thin, transparent, oblong-oval ; epider- 

 mis smoky horn-color, smooth, very bright and shining ; 

 ■whorls five or six, somewhat rounded ; apex obtuse ; 

 suture somewhat impressed ; aperture lateral, oval, its 



