A manual of zoologyWilliam Blackwood & Sons, 1878 |
Inni boken
Resultat 1-5 av 82
Side 91
... ventral surfaces . The " nucleus " in- creases in size , and a number of ovules are formed in its inte- rior . In like manner , the " nucleolus " of each also enlarges , and develops in its interior a number of fusiform or rod - like ...
... ventral surfaces . The " nucleus " in- creases in size , and a number of ovules are formed in its inte- rior . In like manner , the " nucleolus " of each also enlarges , and develops in its interior a number of fusiform or rod - like ...
Side 192
... ventral surface corresponds to the ambulacral areas of an Echinus , and exhibits the mouth and ambulacral grooves . The mouth is central in position , and is not provided with teeth ; it leads , by a short gullet , into a large stomach ...
... ventral surface corresponds to the ambulacral areas of an Echinus , and exhibits the mouth and ambulacral grooves . The mouth is central in position , and is not provided with teeth ; it leads , by a short gullet , into a large stomach ...
Side 196
... ventral surface , and two lateral . The lateral plates generally carry more or less well - developed spines . In the centre of each arm is a chain of quadrate ossicles , forming a central axis , and between this axis and the row of ventral ...
... ventral surface , and two lateral . The lateral plates generally carry more or less well - developed spines . In the centre of each arm is a chain of quadrate ossicles , forming a central axis , and between this axis and the row of ventral ...
Side 198
... ventral ; whilst the dorsal surface is inferior , and gives origin to the pedicle . ) The tubular processes , however , which are given off from the radiating ambulacral canals of the Crinoidea , unlike those of the Echinoidea and ...
... ventral ; whilst the dorsal surface is inferior , and gives origin to the pedicle . ) The tubular processes , however , which are given off from the radiating ambulacral canals of the Crinoidea , unlike those of the Echinoidea and ...
Side 199
... ventral surface exhibits the aperture of the mouth , which may be subcen- tral or may be very excentric , and which in many extinct forms is wholly concealed from view . The ventral sur- face also exhibits the aper- ture of the anus ...
... ventral surface exhibits the aperture of the mouth , which may be subcen- tral or may be very excentric , and which in many extinct forms is wholly concealed from view . The ventral sur- face also exhibits the aper- ture of the anus ...
Innhold
| 327 | |
| 349 | |
| 363 | |
| 370 | |
| 378 | |
| 386 | |
| 398 | |
| 408 | |
| 141 | |
| 156 | |
| 166 | |
| 180 | |
| 191 | |
| 198 | |
| 206 | |
| 214 | |
| 222 | |
| 231 | |
| 245 | |
| 258 | |
| 268 | |
| 276 | |
| 286 | |
| 295 | |
| 302 | |
| 310 | |
| 425 | |
| 443 | |
| 457 | |
| 469 | |
| 475 | |
| 484 | |
| 510 | |
| 523 | |
| 537 | |
| 549 | |
| 568 | |
| 577 | |
| 590 | |
| 614 | |
| 779 | |
| 782 | |
Andre utgaver - Vis alle
Manual of Zoology ...: With a General Introduction on the Principles of Zoology Henry Alleyne Nicholson Ingen forhåndsvisning tilgjengelig - 2015 |
Vanlige uttrykk og setninger
abdomen adult alimentary canal ambulacral amongst animal Annelides antennæ anus aperture appendages Arachnida articulated attached birds bivalve body bones Brachiopoda branchiæ branchial calcareous carapace cavity cephalothorax chitinous ciliated composed comprising consists contractile Crustacea Ctenophora developed disc distinct division dorsal embryo Eocene external extinct extremity feet females fins fishes Foraminifera fossil furnished gemmation genera genus gills head horny Huxley Hydrozoa incisors Insects integument intestine known labium larva larvæ legs limbs living locomotive males Mammals mandibles margin maxillæ membrane molars Mollusca mouth nervous system operculum organs ovum Owen pairs Paleozoic parasitic placed plates polypide polypites Polyzoa portion possess posterior present regarded reproductive Reptiles resembling respiratory Rotifera rudimentary Scolecida segments shell side Silurian single skeleton sometimes somites species spines stomach structure sub-order surface tail teeth tentacles termed thorax toes transverse tube upper usually valves ventral Vertebrates vesicle whilst wings Zoantharia zooids