CONCHOLOGY. 



PLATE CVIII. 



HELIX PV^THOGASTER 

 PYTHOGASTER SNAIL 



Univalve. 



generic character. 



Shell spiral, somewhat diaphanous, brittle, aperture contracted, 

 semilunar, or roundish. 



SPECIFIC CHARACTER 

 AND 

 SYNONYMS. 



Shell imperforate, ovate conoid, chesnut-brown, very finely 

 striated longitudinally, whorls six, roundish, the first ventricose, with 

 dusky or fuscous bands : lip within white : margin reflected. 



Helix Pythogaster: testa imperforata ovato-conoidea, cas- 

 tanea, longitudinaliter subtilissime striata, anfrac- 

 tibus sex teretibus primo ventricoso, cingulis 

 fuscatis : labro intus albo, margine reflexo. 



