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UNIVALVES. — PATELLA. 



A ngulosa — Octangular . 

 Tigrina — Tiger. 

 Monopis — Chesnut-streaked. 

 Chlorosticta — Pigeon's throat. 

 Margaritacea — Great Sun. 

 Tenuissima — Very thin. 



Mitrula — Cap. 

 Plicaria — Wrinkled. 

 Pentagona — Pentagonal. 

 iE nea — Coppery, 

 Conchacea — Radiated. 

 Stunnea — Flat striated. 



Candidissima — WJiite. 



C. — Tip or crown pointed and recurved, 



•Hungarica — Fool's-cap. Borniana — Born. 



Imbricata — Imbricated. Calyptra — Helmet. 



*M3imrm\.lans— Black hair streak Melanoleuca — Black Sf white. 



Tricarinata— r^ree keeled. 

 Pectinata — Striated. 

 Lutea — Yellow. 

 Crista ta — Crested. 

 *Lacustris — Lake. 

 *Fluviatilis — River. 

 Cseca — White bordered. 

 Virginea — Purple rayed. 

 Tessellata — Tessellated. 

 Fulva — Orange tawny. 

 Subspiralis — Subspiral. 

 Ambigua — White duck's bill. 

 Rubicunda — Reddish. 



Pectunculus — Nodulous. 

 Fasciata — Banded. 

 E legans — Elegant. 

 Squamosa — Scaly. 

 S qu alida — Rugged. 

 Crocea — Yellow. 

 Candida — WJiite. 

 Trigona — Triangular. 

 M inima — Small. 

 Tranquebarica — Tranquebar. 

 Perversa — Reverse tipped. 

 C ernua — Flesh-colored. 

 Incurva — Twisted crown. 



Interrupta — Green-dotted. 



D. — Entire, and not 



A fra — African. 

 Lusitanica — Auricula. 

 Radiata — Radiated. 

 Areolata — Pyramidal. 

 Flammea — Flame. 

 Indica — Indian. 

 Surinamensis — Surinam. 

 Vitellina— r^-Z/oM'. 



POINTED AT THE TIP OR CROWN. 



Sanguinolenta — Beauty. 

 L se vigata — Smooth. 

 Punctulata — Dotted. 

 *Pellucida — Blue-rayed. 

 Testudinaria — Tortoise-shell. 

 Testudinalis Dwarf Tortoise-sheJl 

 Compressa — Dutch bonnet. 

 Rustica — Narrow-ribbed. 



