GLOSSARY, 



197 



NiTENS, ni-tens, shining, glossy. 



NiTiDULUS, nit-iddyoul-lass, some- 

 what shining. 



NiTiDUS, nitty-duss, | 



NiTiDA, nitty-dah, I shining. 



NiTiDUM, nitty-dum, ) 



Nocturnal, nok-turnal, belonging 

 to night J performed during the 

 night. 



Nomenclature, no - men - klayt- 

 your, the act of naming ; a list or 

 catalogue. 



Normal, nor-mal, according to 

 rule ; having the usual form or 

 structure. 



Nucleus, newkly-us, literally a 

 kernel ; a central point around 

 which matter is collected ; the 

 tip or first formed portion of a 

 shell. 



Oblique, ob-leek, not straight, 



slanting. 

 Oblong, ob - long, longer than 



broad. 

 Oblonga, ob-long-gah, oblong. 

 Oblong-ovate; between oblong 



and ovate. 

 Obscurus, ob-skew-russ, obscure, 



hidden. 

 Obsolete, obso-leet, somewhat 



indistinct, not well defined, as 



obsolete strice, or lines. 

 Obtusalis, ob-tew-sale-iss ; Obtu- 



SALE, ob-tew-sale-ee, obtu=e, blunt. 

 Obtuse, ob-tewss, blunt. 

 Obvoluta, ob-vo-loot-ah, wrapped 



up. 

 OcHRACEA, o-kraysy-ah, ochreous, 



yellow. 

 OCHRACEOUS, o-krayshuss, of the 



colour of ochre, brownish-yellow. 

 Opalescent, o-pal-essent, like the 



opal, reflecting different colours. 

 Opaque, o-pake, not transparent. 

 Operculated, op-erkyou-late-ed, 



having an operculum, or lid. 

 Operculum, op-erkyou-lum, the 



lid either shelly or horny which 



closes the mouth of some uni- 

 valves ; it is attached to the foot 

 of the animal. 



Order, a secondary division of the 

 animal kingdom. See Class. 



Organ, a natural instrument of 

 action — the lungs -are the organs 

 of breathing, the ears are the 

 organs of hearing, the nerves the 

 organs of feeling, &c. 



Organic, or-gannik, having organs, 

 as animals and plants ; rocks, 

 metals, &c., are inorganic b )dies, 

 that is, they have no organs. 



Organism, or-gan-izzm, of organic 

 structure. 



Orifice, orry-fiss, an opening, a 

 perforation. 



Ornata, or-nate-ah, adorned, or- 

 namented. 



Oval, o-vul, egg-shaped, but having 

 the ends of equal breadth, or 

 nearly so. See Ovate. 



OvALis, o-vay-liss,\ , 



Ovale, o-vay-le, f^^^" 



OvATA, 0-vate-ah, egg shaped. 



Ovate, o-vate, shaped like an ^g'g, 

 with the lower end broadest. 



Oviparous, o - vippah - rus, pro- 

 ducing eggs. 



OvoviviPAROUs, o-vo-vi-vippah- 

 rus, a term which means that the 

 eggs are hatched and the young 

 retained for a time within the 

 body of the parent before they 

 are born. 



P. 



Palatal, pal-a-tal, belonging to 



the palate. 

 Pallial, pally-al, belonging to the 



mantle. 

 Pallial Impression, the mark or 



groove in bivalve shells, caused by 



the muscular attachment of the 



mantle. 

 Pallida, pally-dah, pale. 

 Paludina, pal-you-dine-ah, living 



in marshes. 



