Outline of a course of lectures on the structure and classification of animals / [Robert Edmond Grant].

  • Grant, Robert E. (Robert Edmond), 1793-1874.
Date:
1833
Catalogue details

Licence: Public Domain Mark

Credit: Outline of a course of lectures on the structure and classification of animals / [Robert Edmond Grant]. Source: Wellcome Collection.

    25/28 (page 23)
    nervous system compared with the embryo-forms in higher articulated classes, and with the forms in Annelida and Entozoa. Eyes, antennas, palpi. Digestive, circulating, respiratory and secreting organs. Characters and history of the genera belonging to the orders— 1. Chilognatha. 2. Chilopoda. CLASS ANNELIDA. Affinities of the Helminthoid classes to each other, and to those possessed of articulated members. Characters of the red-blooded worms. Composition, structure and mode of formation of the calcareous, sandy and flexible exterior tubes. Organs of motion. Nervous system and organs of the senses. Organs of circulation, digestion, and secretion. Varieties of the respiratory organs with relation to the subdivisions of the class. Characters and habits of the genera of the orders— 1. Cephalobranchia, 3. Cryptobranchia. 2. Dorsibranchia. CLASS CIRRHOPODA. Characters of the class, and affinities of the Cirrhopoda to the Annelida and entomostracous Crustacea. Structure, composition, and growth of the shells. Lateral maxillae. Articulated, ciliated cirrhi. Sub-abdominal series of ganglia. Dorsal heart. Lateral branchiae. Analogies of the structure of the liver, and its mode of communication with the stomach. Characters and history of the genera of the orders— 1. Pedunculata. 2. Sessilia. CLASS ROTIFERA. Characters of the class and affinities of these minute animals to the other Helminthoid classes. Structure, function, disposition, and analogies of vibratile cilia. Structure of the cerebral and oesophageal ganglia. Distribution of the abdominal nervous cord. Eyes with red choroid. Lateral maxillee. Dorsal ramified artery with colourless blood. Various forms of the alimentary canal and their analogies with those of Annelida. Analogies of the two glandular lobes opening near the head. Structure and nature of the tubes of the covered species. Characters and habits of the genera of the orders— 1. Nuda. 2. Loricata.