Deskripsieng
Description. Small lax colonies to several centimetres high; some colonies fertile. Colonies fasciculated basally, ultimate branches monosiphonic. Hydrothecae numerous, tubular, given off from around branches in fasciculated sections, more or less subalternate on monosiphonic branches. Hydrotheca adherent to branch for more than half of length, abcauline wall variably concave, adcauline wall convex, curving smoothly outwards, free wall shorter than adnate wall. Hydrotheca narrowing basally but without floor. Margin circular, not everted, without replications. Gonothecae large, sausage-shaped, adnate to outer stem tubes, body narrow proximally, becoming tubular, abcauline wall minutely wrinkled, orifice wide, circular, upturned to varying degrees. Perisarc soft and thin throughout, colour (preserved material) grey. Remarks. Without a discernible floor, the length of the hydrothecae is highly variable, making it difficult to provide a precise estimate of length.
Sumber: Bathyal and abyssal hydroids (Hydrozoa, Leptothecata) from southeastern Australia
Distribusieng
Distribution. Australia (type locality), Sierra Leone, Azores, Tierra del Fuego, Peru, Antarctic.
Sumber: Bathyal and abyssal hydroids (Hydrozoa, Leptothecata) from southeastern Australia
Biologi & Ekologieng
Ecology and distribution. This is a deep-water species, found at depths from 200 (Millard 1975) to 6328 m (Vervoort 1972) in scattered records from the Antarctic, Atlantic, Pacific and Indian oceans (cf. Marques et al. 2005). The present material comes from the Porcupine Seabight and the Porcupine Abyssal Plain, collected at depths from 2770 to 4853 m, with gonothecae in May.
Sumber: Benthic hydroids (Cnidaria, Hydrozoa) from bathyal and abyssal depths of the Northeast Atlantic held in the modern Discovery Collections
Deskripsieng
Cryptolarella abyssicola — Marques et al., 2005: 711 – 719, fig. 1 (synonymy)
Sumber: Benthic hydroids (Cnidaria, Hydrozoa) from bathyal and abyssal depths of the Northeast Atlantic held in the modern Discovery Collections
Deskripsieng
Description. Polysiphonic stems, up to 70 mm high. Hydrorhiza rhizoidal, quite robust, formed by a few, basally polysiphonic stolons. Hydrothecae arising in an indefinite pattern. Hydrotheca (Fig. 3 C – D) tubular, diameter roughly constant throughout its length. Hydrotheca bent outwards at distal part. Free portion of hydrotheca highly variable. Hydrothecal aperture circular, rim even, frequently with many renovations. Gonothecae solitary, resting on stem and branches. Gonotheca elongate, with large, circular, distal aperture (Fig. 3 E). Gonothecal wall with fine transversal striation (Fig. 3 E). Only one category of microbasic euryteles observed. Measurements (in µm). Hydrotheca: diameter at aperture 140 – 180. Gonotheca: length, 2100 – 2400, diameter at aperture 360 – 400. Cnidome: microbasic euryteles, 8 – 9 x 3 – 3.5.
Sumber: Benthic hydroids (Cnidaria, Hydrozoa) from bathyal and abyssal depths of the Northeast Atlantic held in the modern Discovery Collections
