[A]
Subtylostyles-Tylostyles present.
NO microscleres. |
| | Phorbas californiana
(de Laubenfels, 1932) |
Sponge:
Thick encrusting to 15 mm, amorphous.
Consistency: fragile.
Surface: superficially smooth with numerous small low profile tubercles and a few smooth ridges.
Oscula: 0.5 - 0.75 mm in diameter.
Color: Preserved: Pale drab.
Spicules: Megascleres:
(1) Subtylostyles - Tylostyles:
162 -224-255- 289 um.
x 2 -4-6- 7 um.
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(2) Acanthostyles:
166 -238-260- 311 um.
x 3 -6- 7 um.
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(3) Subtylostrongyles-Tylostrongyles:
222 -247-265- 294 um.
3 -5-7- 10 um.
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Skeleton:
Ectosome: Fleshy, detachable membrane containing tangential Tylostrongyles and Acanthostyles, the latter often perpendicular to surface with heads exposed.
Choanosome: Isolated branched tracts of Tylostrongyles as well as scattered spicules of all kinds.
Distribution: Southern California.
Depth: Intertidal to subtidal.
Note: May be the same as Phorbas hoffmani. Was formerly Myxilla versicolor californiana.
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[B]
NO Tylostyles present.
Microscleres are Rhaphides.
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(de Laubenfels, 1930) |
Sponge:
Thin, encrusting to 1- 2 mm thick. Often takes the form of the substrate on which it is found.
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