Pneumonophora: alternatives and connections

The division of Thysanura which includes Podura, and allied forms.

A kind of zooid of Siphonophora which has an elongated or even vermiform body, with one tentacle, but no mouth. See Siphonophora.

Division or distribution of genera into two species; division into two subordinate parts.

Any plectognath fish of the genera Monacanthus, Alutera, balistes, and allied genera; -- so called on account of the roughly granulate…

Any whale of the genera Sibbaldius, Balaenoptera, and allied genera, of the family Balaenopteridae, characterized by a prominent fin o…

A method of asexual reproduction among the lowest (unicellular) organisms by means of a process of self-division, consisting of gradua…

A siliceous sponge, of the genus Hyalonema, and allied genera; -- so called from their glassy fibers or spicules; -- called also vitre…

A plectognath fish of the genera Diodon, Tetrodon, and allied genera. The globefishes can suck in water or air and distend the body to…

Any one of several species of American food fishes, of the genus Haemulon, allied to the snappers, as, the black grunt (A. Plumieri),…

Any one of numerous species of tropical American birds of the genus Galbula and allied genera. They are allied to the kingfishers, but…

Any one of the numerous species of birds belonging to Garrulus, Cyanocitta, and allied genera. They are allied to the crows, but are s…

Direct cell division (in which there is first a simple division of the nucleus, without any changes in its structure, followed by divi…

Any one of several species of fringilline birds of the genera Linota, Acanthis, and allied genera, esp. the common European species (L…

Any one of several small, fresh-water, cyprinoid fishes of the genera Cobitis, Nemachilus, and allied genera, having six or more barbu…

A division of acalephs, including Lucernaria and allied genera; -- called also Calycozoa.

Any bird of the genus Merganser, and allied genera. They are allied to the ducks, but have a sharply serrated bill.

Any one of numerous species of Asiatic starlings of the genera Acridotheres, Sturnopastor, Sturnia, Gracula, and allied genera. In hab…

Any species of marine gastropods, of the genera Nassa, Tritia, and other allied genera of the family Nassidae; a dog whelk. See Illust…