Text-book of the embryology of invertebrates v.3, 1895-1900, Volume 3S. Sonnenschein and Company, Limited, 1899 |
Common terms and phrases
abdominal segments Acarina according adult amnion amniotic fold Annelida antennae anus aperture appears appendages Arachnida Araneae arise Arthropoda become blastoderm blastopore body body-cavity brain capensis caudal cavity cells cephalic lobes cephalic segment chain of ganglia chelicerae Chilopoda chitinous cleavage coelomic coelomic sacs connection corresponding Crustacea cuticular degeneration Diplopoda dorsal side ectoderm Edwardsii embryo embryonic envelopes enteron epithelium eyes food-yolk formation further ganglion Geophilus germ-band germ-layers GRABER Hydrophilus hypodermis imaginal discs inner Insecta integument intestine invagination Julus KENNEL KOWALEVSKY larva later stages layer Libellulidae limb-rudiments Limulus maxillae median mesoderm mesoderm-bands METSCHNIKOFF Myriopoda nephridia nuclei ontogenetic ontogeny origin pairs of legs pairs of limbs Pantopoda pedipalps Peripatus posterior end primitive segments proctodaeum regarded region resemblance rudiment SCHIMKEWITSCH Scorpiones SEDGWICK serosa SOGRAFF stomodaeum structure takes place thickening thoracic tracheal transverse tube Ueber ventral organs ventral side ventral surface Wiss yolk yolk-cells Zeitschr Zool
Popular passages
Page 217 - The Maturation of the Ovum in the Cape and New Zealand Species of Peripatus.
Page 161 - 91 Morgan, TH A Contribution to the embryology and phylogeny of the Pycnogonids. Studies Biol. Lab. Johns Hopkins Univ., v. 1891. '89 Narayanan, M. Notes on the anatomy of scorpions. Q. JMS, xxx. 1889. '87 Packard, AS On the Syncarida, a hitherto undescribed group of Malacostracous Crustacea. Memoirs National Acad. Science, iii. '86 Packard, AS On the class Podostomata, a group embracing the Merostomata and Trilobites.
Page 110 - Of these, five certainly, and six probably, constitute the head, which possesses a pair of antennae, a pair of mandibles, and two pairs of maxillae, the hinder pair of which are coalescent, and form the
Page 264 - ... pole nuclei." While the anterior nucleus remains inactive for some time, the posterior, by a kind of budding (?), gives rise to numerous nuclei, which take part in the formation of the blastoderm. The anterior nucleus, on the contrary, after the completion of the blastoderm, is said to produce by division the nuclei of the so-called inner germ-cells or yolk-cells."* In the case of Camponotus, however, the anterior cells go to make up at least the greater part of the blastoderm. In the next stage...
Page 121 - Observations on the nervous System of Insects and Spiders, and some preliminary Observations on Phrynus. J. Hopkins Univ. Circ. Vol. VI. 1887. C. CLAUS (86), Prof. E. RAY LANKESTER'S Artikel »Limulus an Arachnid« und die auf denselben gegründeten Pra'tensionen und Anschuldigungen.
Page 161 - Band 1,1879. 5. Dohrn, Ant. Die Pantopoden des Golfes von Neapel. Fauna und Flora des Golfes von Neapel.
Page 427 - Protostraca," say Korschelt and Heider, " according to the present condition of our knowledge, we may, as has been already remarked, assume three great series of development of the Arthropodan stock, by the side of which a number of smaller independent branches have been retained. One of these series leads through the hypothetical primitive Phyllopod to the Crustacea ; the second through the Palaeostraca (Trilobita, Gigantostraca, Xiphosura) to the Arachnida ; the third through forms resembling Peripatus...
Page 410 - Trophoblast and Serosa." A contribution to the Morphology of the Embryonic Membranes of Insects. Quart. Journ. Micr. Sci., vol. xli. 23. 1907. WILSON, JT, and HILL, JP — " Observations on the Development of Ornithorhynchus.
Page 389 - ... the sexupara, the parthenogenetic and viviparous descendants of which are winged males and wingless females. After copulation, these females lay the fertilized winter eggs. This cycle of development is still further complicated by migrations from one plant host to another. A winged parthenogeretic generation frequently appears, and then may migrate to a different plant there to reproduce itself, and in a later generation return to the original host (Lichenstein, 1875). These generations have...
Page 258 - Verhandl. kk zool.-bot. Gesell. Wien, 1883. '66 Lubbock, J. On Pauropus, a new type of centipede. Trans. Linn. Soc., xxvi. '81 Lankester, ER Limulus an Arachnid. Quar. Jour. Mic. Sci., xxi. '41 Newport, G. On the organs of reproduction and the development of the Myriapoda. Phil. Trans. '85 Oudemans, AC Die gegenseitige Veiwandschaft, Abstanimung und Classification der sog.