A manual of zoology for the use of students : with a general introduction on the principles of zoology / by Henry Alleyne Nicholson.
- Henry Alleyne Nicholson
- Date:
- 1878
Licence: Public Domain Mark
Credit: A manual of zoology for the use of students : with a general introduction on the principles of zoology / by Henry Alleyne Nicholson. Source: Wellcome Collection.
Provider: This material has been provided by University of Bristol Library. The original may be consulted at University of Bristol Library.
782/840 page 762
![Oral (Lat. os, month). Connected with the mouth. S'MZf''r'' (Gr. or/./., a bird; de/phus, womb). The prin.ary division ot Mammals comprising the Monotrmialu. ' 1 J ' OumTH(«ci.;LiDA (Gr ornis, bird ; skelon, leg). Applied by Huxley to the iJei losauriaii Reptiles, together witli the genus Compsognuthus, on account ot tlie bird-hke characters of their hind-limbs ^ a ^ OUTHOCICHATID.E (Gr. orthm, straight; keras, horn). A family of the Nav- tUuia'., m which tlie shell is straight, or nearly so. OiiTHOPTKRA (Gr. orthos, straight; 2^teron, wing). An order of Insects. USCULA (Lat. diminutive of os, mouth). 1. The large apertures by which a sponge IS perforated (exhalant apertures). 2. The suckers with which tlie I muada (Tape-worms and Cystic Worms) are provided. OSSICULA (Lat. diminutive of os, bone). Literally small bones. Often used to designate any hard structures of small size, such as the calcareous plates in the integument of the Star-fishes. OSTRACODA (Gr. osirakon, a shell). An order of small Crustaceans which are enclosed iu bivalve shells. Otoliths (Gr. ous, ear; and lithos, stone). The calcareous bodies connected with the sense of hearing, even in its most rudimentary form. OvARLVN Vesicles or Capsules. The generative buds of the Sertularida. Ovary (Ovarium). The organ by which ova are produced. Oviparous (Lat. ovmji, an egg; audpario, I bring forth). Applied to animals which bring forth eggs, in contradistinction to those which bring forth their young alive. Ovipositor (Lat. ovuvi; and po?io, I place). The organ possessed by some in- sects, by means of which the eggs are placed in a position suitable for their development. Ovisac. The external bag or sac in which certain of the Invertebrates carrv their eggs after they are extruded from the body. OvovrviPAROUS (Lat. ovum, egg; vivus, alive; pario, I produce). Applied to animals which retain their eggs within the body until they are hatched. Ovum ( Lat. au egg). The germ produced within the ovary, and capable under certain conditions of being developed into a new individual. Pachtdermata (Gr. pachus, thick ; derma, skin). An old Mammalian order constituted by Cuvier for the reception of the Ehinoceros, Hippopotamus, Elephant, &c. Paleontology (Gr. palaios, ancient; onta, beings ; and logos, discourse). The science of fossil remains or of extinct organised beings. PALiEOZOic (Gr. 23alaios, ancient; and zoe, life). Applied to the oldest of the great geological epochs. Palliobranchiata (hat. pallium., a cloak; and Gr. hragchia, gill). An old name for the Brachiopuda, founded upon the belief that the system of tubes in the niantle constituted the gills. Pallium (Lat. a cloak). The mantle of the Mollusca. Pallial; relating to the mantle. Pallicd line or impression ; the line left iu the dead sliell by the muscular margin of the mantle. Pallial shell; a shell which i.> secreted by, or contaiued within, the mantle, such as the bone of the Cuttle-fishes. Palpi (Lat. palpo, I touch). Processes supposed to be organs of touch, de- veloped from certain of the oral appendages in Insects, Spiders, and Crus- tacea, and from the sides of the mouth in the Acephalous Molluscs. Panspermy (Gr. pan, all; sperma, seed). The theory that living beings are never produced except from pre-existent living beings. Papilla (Lat. for nipple). A minute soft ]3rominence. Parapodia (Gr. para, beside ; podes, feet). The uuarticulated lateral locomo- tive processes or foot-tubercles of many of the Annelida. Parietal (Lat. paries, a wall). Connected with the walls of a cavity or of the body. Pariktosplanchnic (Lat. paries; Gr. splagchna, viscera). Applied to one of the nervous ganglia of the Mollusca, which supplies the walls of the body and the viscera.](https://iiif.wellcomecollection.org/image/b21445746_0782.jp2/full/800%2C/0/default.jpg)
