Crisia

Belongs within: Stenolaemata.

Crisia is a living genus of cyclostome bryozoans forming tufted or straggling colonies less than 3 cm high.

Characters (from Hayward & Ryland 1985): Sterile internodes, except proximally, of three to many zooids; fertile internodes of at least five zooids. Membranous sac of gonozooid not subdivided. Polypide with eight tentacles.

<==Crisia Lamouroux 1812H15
    |--C. biciliataH15
    |--C. cornutaH15
    |--C. cribrariaH15
    |--C. cuneata Maplestone 1905 [incl. C. circinata Waters 1914]H15
    |--C. cylindrica Busk 1886H15
    |--C. eburnea [incl. C. occidentalis]H15
    |--C. edwardsianaH15
    |--C. elongata Milne Edwards 1838 (see below for synonymy)H15
    |--C. geniculata Milne Edwards 1838 (see below for synonymy)H15
    |--C. hoernesii Reuss 1847H15
    |--C. inflata Waters 1914H15
    |--C. kerguelensis Busk 1876 [incl. C. eburnea var. laxa Busk 1886]H15
    |--C. nozeroyensis Voigt & Walter 1991T93
    |--C. patagonicaH15
    |--C. pilosaR26
    |--C. reptansR26
    `--C. subaequalis Reuss 1869H15

Crisia elongata Milne Edwards 1838 [incl. C. denticulata Philipps 1899, C. denticulata var. gracilis Busk 1886, C. margaritacea Busk 1875, C. nigrijuncta Ortmann 1889, C. punctifera Haswell 1879, C. sinensis d’Orbigny 1850-52, C. terraereginae Haswell 1880]^H15

Crisia geniculata Milne Edwards 1838 [=Crisia cornuta var. geniculata, Crisidia cornuta var. geniculata, Filicrisia geniculata]^H15

*Type species of generic name indicated

References

[H15] Harmer, S. F. 1915. The Polyzoa of the Siboga Expedition – Part I. Entoprocta, Ctenostomata and Cyclostomata. E. J. Brill: Leyden.

Hayward, P. J., & J. S. Ryland. 1985. Cyclostome Bryozoans: keys and notes for the identification of the species. Brill.

[R26] Risso, A. 1826. Histoire naturelle des principales productions de l’Europe méridionale et particulièrement de celles des environs de Nice et des Alpes maritimes vol. 5. F.-G. Levrault: Paris.

[T93] Taylor, P. D. 1993. Bryozoa. In: Benton, M. J. (ed.) The Fossil Record 2 pp. 465–489. Chapman & Hall: London.