[A]
On open coast, intertidal to subtidal, 5 m.
Tangential skeleton of horizontal styles 80 to 120 μm thick, easily removed.
Surface not lace-like. |
| | Hymeniacidon actites
(Ristau, 1978) |
Sponge:
Encrusting to 2.7 cm, amorphous.
Consistency: Firm, flexible.
Surface: Smooth, with irregular contour.
Oscula: Few oscula, 0.3- 1.3 mm diameter, often on slight mounds.
Color: Alive: Bright yellow. Preserved: White exterior, and yellow or white interior.
Spicules: Megascleres:
(1) Styles-Smooth- gently curved:
165 - 220 um.
x 4.0 - 8.0 um.
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Skeleton:
Ectosome: Tangential ectosomal skeleton of ill- defined layers of Styles forming multi-spicular tracts united into polygonal network, or matted together. Subectodermal spaces well defined.
Choanosome: Ectosomal skeleton supported by compact multispicular tracts or rests on interior spiculation. Interior spiculation confused, Styles pointing in all directions.
Distribution: Central to Northern California.
Depth: Rare. Intertidal to subtidal to 5 m.
Note: Was formerly known as Leucophloeus actites.
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[B]
Deep water, 168 - 237 m.
NO removable tangential skeleton.
Surface smooth, lace-like.
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| | Hymeniacidon sp.
Green & Bakus, 1994 |
Sponge:
Encrusting to 0.2 mm, attached to barnacle shell. .
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