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UNIVALVES. — NERITA. 



"SERIT A.— Nerite or Hoof-Shell. 



Canrena — Tabby-cat. 

 Ca ncellata — La tticed. 

 *Glaucina — Livid. 

 Vitellus — Clouded-yellow. 

 Albumen — Yolk-of-egg. 

 Mammilla — Breast. 

 Leucozonias — White-banded. 

 Spadicea — Chesmit-colored. 

 Rufa — lied. 

 F ulminea — Zigzag. 

 Stercus-muscarum — Fly-spot 

 Orlentalis — Eastern. 



A. — Umbilicated. 



Cruentata — Red-spotted. 

 Rugosa — WrinJcled. 

 Marochicnsis — Marocco. 

 S ulcata — Grooved. 

 Aracnoidea — Spider's Web. 

 Vittata — Ribbo7i. 

 Melanostoma — Black-mouthed. 

 *Famdu\eL— Pallid. 

 Papilla — Nipple. 

 Clathrata — Grated. 

 Valvata — Flattish. 

 Islandica — Islandic. 



AfBnis — Ochraceous. 



B. — Imperforated; lip toothless. 



Corona — Coronated. *Lacustris — Lake. 



Radula — jRough-ribbed. Magdalente — Magdalene. 



Cornea — Horn. M arginata — Margined. 



*Fluviatilis — River. Dubia — Black-marked. 



*Littoralis — Strand. *Pellucida — Pellucid. 



*A\hSi— White. 



C. — Imperforated; lips toothed. 



PuUigera — Red. 

 Undulata — Undulated 

 Aterima — Thick-opaque. 

 Larva — Broad-band. 

 Pupa — Black and white. 

 Bidens — Double-toothed. 

 Viridis — Green. 

 Virginea — Gtiiiiea-hen. 

 Polita — Polished. 



Peloronta — Bleeding-tooth. 

 Albicilla — Pimple-lip. 

 Histrio — Toothed-lip. 

 Plicata — Wrinkled-lip. 

 Grossa — Red-thrush. 

 Chamaeleon — Changeable. 

 Undata — Waved. 

 Exuvia — Deep-ridged. 

 Maxima — Great black ^ yellow. 



