Zoological classification : a handy book of reference with tables of the subkingdoms, classes, orders, etc., of the animal kingdom, their characters and lists of the families and principal genera / [Francis Polkinghorne Pascoe].

  • Francis Polkinghorne Pascoe
Date:
1880
Catalogue details

Licence: Public Domain Mark

Credit: Zoological classification : a handy book of reference with tables of the subkingdoms, classes, orders, etc., of the animal kingdom, their characters and lists of the families and principal genera / [Francis Polkinghorne Pascoe]. Source: Wellcome Collection.

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    VERMES. bristles and without a double blood-vascular system), including Sipunculidae and Priapulidae; and Armata or Chaetiferi (with corneous bristles and a double blood-vascular system),=Echiuridfe and Sternaspidae. The latter is, however, referred by Olaus to Polychaeta. Chcetoclerma, placed in Priapulidae by the same authority, has the body furnished with spines. Sipuwculidce. Sipunculus=Syrinx. Phascolosoma. Aspidosiphon. Diesingn. Dendrostom um. Priapulidce. Priapulus. Anoplosomatum. Class toderma. Eckiuridts. Echiurus. Bonellia. Thalassema. Ancistropus. Siemaspidts. Sternaspis. Class Y. ANNELIDA. Annulata. Body composed of numerous segments [somites], the limbs rarely present, or, if present, rudimentary [parapodia], A vas- cular system with red blood, but without corpuscles, in most. The skin is soft, composed of many layers, the surface mostly ciliated, the cilia bristle-like, and often fasciculate ; the segments are sometimes to the number of 400. There is occasionally a rudimentary head [prostomium]; it bears two or more cirri or tentacles (antennae and palpi), sometimes, but rarely, jointed. The blood-vascular system is very variable, but is composed mainly of longitudinal canals. The blood is rarely propelled from behind forwards. There are no true parasites in this class, except some Hiru- dinea; but inquilines or commensals are sometimes met with. Very few species are terrestrial. The genera Polyophthalmus, Pc.ro, and Capitella form the Haloscolecina of Carus. Anarthropoda is a divisional name, used to include this and the two preceding classes. Mouth suctorial HrituDiNEA. Mouth not suctorial. Without branchiae Oligocii/ETA. With branchiae. Branchiae dorsal Ciiaitopoda. Branchiae cephalic Cephalobranchia.