BIVALVES. — OSTREA. 65 



BuUata — Swollen. Glacialis — Icy. 



Fragilis — Brittle. Excavata — Hollow. 



Scabra — Rough. *Loscombia — Loscomb's. 



Family 4. — Valves smooth or striated, and not closing. 

 Pleuronectes — Sole. Japonica — Japanese. 



Magellanica — Magellanic. 



Division II. — Valves with unequal ears. 

 Family 1. — Valves ribbed. 

 Pes-Iutrae — Otter's-foot. * Varia — Variegated. 



Pallium — Ducal Mantle. Sauciata — Unequal-rayed. 



Sanguinolenta — Blood-spot. Pusio — Wrinkled. 



Palliata — Variegated. *Sinuosa — Distorted. 



Nodosa — Kjiobbed. Miniata — VermilioJi. 



Pes-felis— Ca^'5 Foot. TnYadiata— Three-rayed. 



Sulcata — Sulcated. Solaris — Solar. 



*Cinnabarica — Red. Glabra — Glabrous. 



Senatoria — Senator. *Opercularis — Painted. 



Citrina — Yellow. *Lineata — Lined. 



Pellucens — Pellucid. Nucleus — Kernel. 



Obliterata — Worn. Gibba — Gibbous. 



Sanguinea — Scarlet. Turgida — Turgid. 



Porphyria — Porphyry. Pyxidata — Box-like. 



Flavicans — Yellow. 



Familvt 2. — Valves smooth. 

 Tigrina — Tiger. Vitrea — Glassy. 



Fuci — Fucus. *Obsoleta — Obsolete. 



Exotica — Exotic. *Laevis — Smooth. 



Proteus — Variable. 



Division III. — Oblong, linear. 



Family 1. — With a transverse lobe on each side of the hinge. 

 Malleus — Hammer. 



Family 2. — With a slight beak on one side of the hinge. 

 Figurata — Figured. 



