Explanation of Terms. 
XXV 
Lunate. 
Crescent-shaped . 
Mandible3. 
Upper and lower, the two divisions of a bird's beak, 
or the projecting jaws of an insect. 
Migratory. 
Coming and going at certain seasons. 
Multivalve. 
"With many shells or openings. 
Nacreous. 
Resembling mother-of-pearl. 
Nictitating. 
"Winking ; applied to a membrane with which birds 
cover their eyes at pleasure. 
Olfactory. 
Relating to smell. 
Operculum. 
A shield or cover. 
Ornithology. 
A description of birds. 
Oviparous. 
That lays eggs. 
Palmated. 
Webbed. 
Parasitic. 
Attached to and dependent on some other living body. 
Parturition. 
The act of bringing forth young. 
Passerine. 
Belonging to the sparrow tribe. 
Pectinate. 
Resembling a comb. 
Pectoral. 
Belonging to the breast. 
Pendulous. 
Hanging down. 
Piscivorous. 
Feeding on fishes. 
Plicate. 
Folded. 
Prcdaceous. 
Formed to pursue prey. 
Prehensile. 
Capable of grasping. 
Quadrifid. 
Divided into four parts. 
Quadruped. 
Four-footed. 
Ramose. 
Branching. 
Reptiles. 
Animals of the serpent tribe, with legs. 
Rudimentary. 
Small ; imperfectly developed. 
Ruminating. 
Chewing the cud. 
Scabrous. 
Rough. 
Scapulars. 
Shoulders. 
Semilunar. 
In the form of a half-moon. 
Serrated. 
Notched like a saw. 
Sessile. 
Attached without the intervention of a stalk. 
Setaceous. 
Having bristles or strong hairs. 
Spiral. 
"Winding like a screw 
Squamose. 
Scaly. 
Striated. 
Streaked or striped. 
Subulated. 
Formed like an awl. 
Sulcated. 
Furrowed. 
Stdure. 
The line of junction of two hind parts. 
Tentacula. 
The feelers of snails and other mollusca. 
Testaceous. 
Covered with a shell, as oysters. 
Trifurcated. 
Three-forked. 
Truncated. 
Appearing as if cut off; 
