The Blood-system in the Serpulimorpha (Annelida, Polychaeta)

The Blood - system in the Serpulimorpha ( Annelida , Polychaeta )

The blood-system in the Serpulimorpha (Annelida, Polychaeta). II. The anatomy of the blood-system in the Sabellidae, and comparison of Sabellidae and Serpulidae.

I . An account will be given of the anatomy of the blood-system of Pomatoceros triqueter, and of comparative observations on the following serpulids: Serpula vermicularis, S. lo-biancoi, Hydroides norvegica, Vermiliopsis infundibulum, Salmacina incrustans, Protula intestinum, P. tubularia, Apomatus ampulliferus, A. similis, Spirorbis militaris, and S. corrugatus. 2. In all species there is a ce...

The Blood - system in the Serpulimorpha (

Intravasal tissues of unknown function have been found in Pomatoceros triqueter, Vermiliopsis infundibulum, Protula intestinum, and Apomatus ampulliferus. They consist of connective tissue fibres clothed with small cells with densely staining cytoplasm. In Pomatoceros the tissue is situated intersegmentally in the gut sinus of the thorax and anterior part of the abdomen; it lies on each side of...

The Eyes and the Photonegative Behaviour of Nephtys (annelida, Polychaeta)

Syllidae (Annelida, Polychaeta) from the Caribbean coast of Venezuela

Venezuela possesses a great variety of coastal environments allowing for a high diversity of marine species. However, systematic studies on marine invertebrates are scarce, especially on polychaetes. The family Syllidae is poorly known, and only 14 genera and 42 species have been reported from this country. A total of 13 genera and 26 species the Syllidae were identified from benthic samples co...