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Composition of the Blood in Onychophora
THE primitive terrestrial arthropods of the Class Onychophora are of especial zoological interest. As comparatively little is yet known of their physiology it seems worth recording some measurementsExpand
Spermatogenesis in anthozoa: Differentiation of the spermatid
SummaryThe fine structure of spermatids has been examined in Calliactis, Protanthea, Gonactinia and Parazoanthus (Cnidaria, Anthozoa). The sperm cells are relatively simple and lack distinctExpand
The adaptive pattern of growth and reproduction of the colonial hydroid Clavopsella michaeli
Istituto Sperimentale Talassografico C.N.R. 'A. Cerruti' via Roma 3, 74100 Taranto, ItalyKey words: Hydroids, growth, reproduction, control mechanismsAbstractThe effects of variations in temperature,Expand
Some Observation on the Swimming Behaviour of the Anemone Stomphia Coccinea
1. The swimming behaviour of the anemone Stomphia coccinea , previously known to be a specific response to contact with two species of starfish, is briefly described. 2. The sphincter, isolated orExpand
The identity and occurrence of Kerona pediculus (Ciliophora: Hypotrichida), a well-known epizoite of Hydra vulgaris (Cnidaria: Hydrozoa)
Epizoic Kerona pediculus have been found on Hydra vulgaris and on Cristatella mucedo (Bryozoa) in the same habitat. On the basis of morphological characters (using Nomarski and Scanning ElectronExpand
Fine structural and histochemical studies on salivary glands of Peripatoides novae-zealandiae (Onychophora) with special reference to acid phosphatase distribution.
The Onychophora feed on small arthropods and produce saliva when ingesting prey. Although saliva undoubtedly helps to liquefy the food its constituents have not yet been fully described. The salivaryExpand
The senses of sea anemones: responses of the SS1 nerve net to chemical and mechanical stimuli
The ectodermal slow system (SS 1) is one of 3 separate nerve nets in sea anemones. SS 1 sensory responses coordinate swimming in Stomphia coccinea (escape response) and expansion to dissolved foodExpand
Taxonomic index
The names of newly described genera and species appear in bold type. All taxa indexed are cnidarian or ctenophoran unless otherwise indicated, when the four-kingdom classification is used, followingExpand