n. [Gr. peri, around; proktos, the anus]
1. The distal piece or segment of the body containing the anus.
2. (ANNELIDA: Oligochaeta)
The pygomere or pygidium.
see telson.
The circular membrane containing the anus, surrounded by a varying number of embedded plates.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • Periproct — Per i*proct, n. [Pref. peri + Gr. ? the anus.] (Zo[ o]l.) The region surrounding the anus, particularly of echinoderms. [1913 Webster] …   The Collaborative International Dictionary of English

  • periproct — periproctal, periproctic, periproctous, adj. /per euh prokt /, n. (in certain echinoids) that part of the body surface bordering the anus. [1875 80; PERI + proct < Gk proktós anus] * * * …   Universalium

  • periproct — peri·proct …   English syllables

  • periproct — …   Useful english dictionary

  • endocyclic — adj. [Gr. endon, within; kyklos, circle] (ECHINODERMATA: Echinoidea] Pertaining to a test with rounded profile, peristome and periproct central at the oral and aboral poles respectively; periproct encircled by apical system of plates …   Dictionary of invertebrate zoology

  • genital plates — 1. (ARTHROPODA: Chelicerata) see epigynum. 2. (ECHINODERMATA: Echinoidea) Plates surrounding the periproct …   Dictionary of invertebrate zoology

  • plastron — n. [F. plastron, breast plate] 1. The chorion of some eggs. 2. (ARTHROPODA: Insecta) A permanent film of air retained by hairs on the outside of an aquatic insect body allowing an air water interface for gaseous exchange. 3. ECHINODERMATA:… …   Dictionary of invertebrate zoology

  • telson — n. [Gr. telson, end] 1. (ARTHROPODA) The terminal portion of an arthropod body (not considered a true somite), usually containing the anus; the periproct. 2. (ARTHROPODA: Chelicerata) In scorpions, the distal stinging caudal spine. 3. (ARTHROPODA …   Dictionary of invertebrate zoology

  • trunk — n. [L. truncus, cut off] 1. (ANNELIDA) a. In Polychaeta, the body between the peristomium and the pygidium. b. In Oligochaeta, the body between the peristomium and periproct. 2. (ARTHROPODA: Crustacea) The postcephalic portion of the body. 3.… …   Dictionary of invertebrate zoology

  • Periprokt — Inneres Kalkskelett eines regelmäßigen Seeigels. Das Periprokt befindet sich an der Oberseite um die Afteröffnung. Das Periprokt, bzw. Periproct abgeleitet vom griechischen peri= „um ... herum“ und proktos = „After“, oder Afterfeld bezeichnet in… …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.