340 GLOSSARY. 



NAu'Ti-Lon». Kesembling the shell of the Jfautilut in shape. ■ ' 



Neoh-o-cal't-oes. 



Neoh-o-oa'lyx (Gr. necho, I swim; halux, cup). The swimmlng-'beU oi 

 " disc" of a Medusa or Jelly-fish. 



Nem-a-tel'mi-a (Gr. memo, thread; helmins, a ■woim). The division of (S(»Z«- 

 cida comprising the Eound-worms, Thread-worms, etc. 



Ne-mat'o-otsts (Gr. »emffi, thread ; kustis, a hag). The thread-oeUs of the 

 CmUnteraia. {See CnidEe.) 



Nem-a-to'da. 



Nem-a.^oid'e-a (Gr. nema, thread; eidos, form). An order of Scoledda com- 

 prising the Thread-worms, Vinegar-eels, etc. 



Nb-mat'o-phoees (Gr. rrnna, thread : ^A«ro, I carry). Caecal processes found 

 on the ooenosarc of certain of the Sertularida, containing numerous thread- 

 cells at their extremities. 



Ne-mee'ti-da (Gr. Nemertes, proper name). A division of the Turbellarian 

 Worms, commonly called "Eibbon-worms." 



Neev'dees (Lat. nenus, a sinew). The ribs which support the membranous 

 wings of insects. 



Ned'eal (Gr. neuron, a nerve). Connected with the nervous system. 



ifEu-EA-poPH'r-sis (Gr. neuron, a nerve ; apophviis, a projecting part). The 

 " spinous process " of a vertebra, or the process formed at the point of 

 junction of the neural arches. 



Neue-o-po'di-um (Gr. neuron, a nerve ; pous, the foot). The ventral or in- 

 ferior division of the " foot tubercle " of an Annelide; often called the 

 "ventral oar." 



Neu-eop'te-ra (Gr. neuron ; and pferon, a wing). An order of Insects charac- 

 terized by four membranous wings with numerous reticulated nervures 

 («. g., Dmgon-fiies). 



Neu'teb (Lat. for neither the one nor the other). Having no fully-developed 

 sex. 



Nid-i-fi-oa'tion (Lat. nidus, a nest ; facio, I make). The building of a nest. 



Noo-tde'nai. (Lat. nox, night). Applied to animals which are active by night. 



Noe'mal (Lat. norma, a me). Conforming to the ordinary standard. 



No-to-beanch-i-a'ta (Gr. notos, the back j and hragcMa, gjlls). Carrying the 

 gills upon the back ; applied to a division of the AnneUda. 



No'TO-oHOED (Gr. notos, back ; cTwrde, string). A cellular rod which is devel- 

 oped in the embryo of Vertebrates immediately beneath the spinal cord, 

 and which is usually replaced in the adult by the vertebral column. Often 

 it is spoken of as the " chorda dorsalis." 



No-TO-po'ni-TOi (GrT. notos, the back; and pous, the foot). The dorsal divis- 

 ion of one of the foot-tubercles or parapodia of an Annelide ; often called 

 the " dorsal oar." 



Nu'oLE-A-TED. Posscsslng a nucleus or central particle. 



Nd-ole'o-lus. 1. The minute solid particle in the interior of the nucleus of 

 some cells. 2. The minute spherical particle attached to the exterior of 

 the " nucleus," or ovary, of certain Infusoria, performing the functions of 

 a testicle. 



Nd'ole-ds (Lat. nucleus, a kernel). 1. The solid or vesicular body found in 

 many cells. 2. The solid rod, or band-shaped body found in the interior 

 of many of the JProtozoa, and having, in certain of tnem, the functions of 

 an ovary. 3. The " madreporiform tubercle" of the MMnodermata. i. 

 The embryonic shell which is retained to form the apex of the adult shell 

 in many of the Mollusca. 



Nu-di-beanoh-i-a'ta (Lat. nudns, naked; and Gr. hragchia, gills). An order 

 of the Gasteropoda m which the gills are naked. 



Ntmphs. The active pupce of certain Insects. 



Oo-oip'i-TAL. Connected with the occiput, or the back part of the head. 

 0-OB-AN'io. Applied to animals which inhabit the open ocean (= pel^o). 

 0-obl'li (Lat. diminutive of oculus, eye). The simple eyes of many Eohino- 



^-OKL LI (jasa. aiminutive oi ocuius, eye). 1. 

 derms, Spiders, Crustaceans, Molluscs, etc. 



