Giesbrecht sentence example
- Giesbrecht and Hansen have shown that the mouth-organs consist of mandibles, first and second maxillae and maxillipeds; and Claus himself relinquished his long-maintained hypothesis that the last two pairs were the separated exopods and endopods of a single pair of appendages.
- In the same year Giesbrecht proposed his division of the order into Gymnoplea and Podoplea.
- Even this verbal flaw would be obviated if Giesbrecht could prove his tentative hypothesis, that the Gymnoplea may have lost a pre-genital segment of the abdomen, and the Podoplea may have lost the last segment of the thorax.
- Animals usually freeliving, pelagic (Giesbrecht and Schmeil).
- This group, with 65 genera and four or five hundred species, is divided by Giesbrecht into tribes: (a) Amphaskandria.Advertisement
- Of 177 species valid in the family Giesbrecht and Schmeil assign 67 to Diaptomus.
- This group is also divided by Giesbrecht into two tribes, Ampharthrandria and Isokerandria.
- Of the families comprised, the Mormonillidae consist only of Mormonilla (Giesbrecht), and are not mentioned by Giesbrecht in 1899 in the grouping of this section.
- To the Cyclopidae six genera are allotted by Giesbrecht in 1900.
- Giesbrecht (1900) considers Canu quite right in grouping together in this single family those parasites of ascidians, simple and compound, which had been previously distributed among families with the more or less significant names Notodelphyidae, Doropygidae, Buproridae, Schizoproctidae, Kossmechtridae, Enterocolidae, Enteropsidae.Advertisement
- Giesbrecht, displacing the older name Ascomyzontidae, assigns to this family 21 genera in five subfamilies, and suggests that the long-known but still puzzling Nicothoe from the gills of the lobster might be placed in an additional subfamily, or be made the representative of a closely related family.
- The Dichelestiidae, on account of their sometimes many-jointed first antennae, are referred also to this tribe by Giesbrecht.
- To this tribe Giesbrecht assigns the families Clausidiidae, Corycaeidae, Oncaeidae, Lichomolgidae, Ergasilidae, Bomolochidae, Clausiidae, Nereicolidae.
- (The earlier memoirs of importance are cited in Giesbrecht's Monograph of Naples, 1892); Canu, " Hersiliidae," Bull.
- The order thus defined (see Giesbrecht and Schmeil, Das Tierreich, 1898), with far over a thousand species (Hansen, 1900), embraces forms of extreme diversity, although, when species are known in all their phases and both sexes, they constantly tend to prove that there are no sharply dividing lines between the free-living, the semi-parasitic, and those which in adult life are wholly parasitic and then sometimes grotesquely unlike the normal standard.Advertisement