140 HERPETOLOGY AND ICHTHYOLOGY: GLOSSARY. 



.. Latin. Naked. 

 OCELLATE. From the Latin, ocuZus, 

 an eye. Having marks resemb- 

 ling an eye. 



OZsopiiAGUS. Es-o'-fa-gus. From the 

 Greek, oiso, I carry, and phagein, 

 to eat. The gullet. The membra- 

 nous canal which conveys food 

 from the mouth to the stomach 



OLFAC'TORY. From the Latin, olfac- 

 tus, the >mell. Belonging or rela- 

 ting to smell. 



OMNISCIENT. From the Latin, omnis, 

 all, every thing, and scio, I know 

 All-knowing. 



OPER'CULA. Latin. Plural of oper 

 culum. 



OPER'CULAR. Belonging or relating 

 to operculum. 



OPER'CULUM. Latin. A cover, a 

 lid. A bony plate, which, in a 

 great m sny fishes, covers the gills. 

 The gill-cover. The little cover, 

 or kind of door, which closes the 

 entrance, or mouth of a shell. 



OPHI'DIA. From the Greek, ophis, 

 serpent. Systematic name of an 

 order of reptiles. 



OPHIDIAN. Any reptile of the order 

 of ophidia. 



ORBIT. From the Latin, orbis, a 

 circle. The circular cavities which 

 lodge the organs of vision, are 

 called orbits. 



OR'BITAL. Belonging or relating to 

 the orbits. 



ORGAN. From the Greek, organon, 

 an instrument. Part of an orga- 

 nised being, destined to exercise 

 some particular function ; for ex- 

 ample, the ears are the organs of 

 hearing, the muscles are the organs 

 of motion, &c. 



ORGA'NIC. Relating to an organ. 



ORGANISED. Composed of organs; 

 having a mode of structure. 



ORGANIZATION. The mode, or man- 

 ner of structure of an organised 

 being. 



Os. Latin. Bone. 



OSME'RUS. Generic name of the 

 smelt. 



OS'SEOUS. From the Latin, os, bone. 



Bony, composed of bone. 

 OS'SIPIED Applied to that which has 



become bone. 



OS'SIFICATION. From the Latin, oa, 

 bone, and facere, to make. The 

 formation of bone. The process 

 by which bone is formed. 



OSTRACION. From the Greek, ostra- 

 kon, a shell, a scale Generic name 

 of the trunk-fish. 



OVI'PAROUS. From the Latin, ovum, 

 an egg, and parere, lo bring forth. 

 Animals that multiply by means of 

 eggs, are oviparous. 



OVO-VIVI'PAROUS. From the Latin, 

 ovum, egg, vivus, alive, and parere, 

 to bring forth. Animals that multi- 

 ply by means of eggs, which are 

 hatched before they are laid. 



OX'YGEN. ox'-e-jin. From the Greek 

 oxus, acid, sour, and gennao, I 

 engender. The generator of acid, 

 as it was believed to be exclu- 

 sively when this name was given 

 to it. A gas which constitutes 

 about one fifth of our atmosphere, 

 which is necessary to the respira- 

 ' tion of animals, and consequently, 

 indispensable to animal life. But 

 it cannot be breathed alone for any 

 considerable time with impunity, 

 requiring to be mixed with about 

 four parts of nitrogen, (azote) as 

 is the case in our atmosphere to 

 render it suitable for respiration. 



PALATINE. Relating to the palate. 



PAL'MATE. From the Latin, palma, 

 the pa!m. Having the form of the 

 palm, from the toes or fingers be- 

 ing united by a membrane. 



PAN'CREAS. From the Greek, pan, 

 all, and kreas, flesh. All fleshy. 

 A gland deeply sealed in the abdo- 

 men, which resembles the salivary 

 gland in its structure, and has been 

 called the abdominal salivary gland. 



PAPI'LLA. Latin. A nipple. A name 

 given to small eminences, which 

 appear to be formed by the ulti- 

 mate expansion of the vessels and 

 nerves. 



PAPILLA. Latin. Plural of papilla. 



