[A]
Monacts of 1 size class.
Sigmas of 2 size classes.
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(Johnston, 1842) [of Bakus, 1966] |
Sponge:
Thin encrusting to massive from 2.5 cm ( on Chlamus spp. or free-living) to 8 cm. thick .
Consistency: firm.
Surface: slightly rough, warty, to rugose, amorphous and fistulate.
Oscula: abundant, 0.3 - 4.0 mm in diameter.
Color: Alive: Gold to light gold brown, with tinge of rose, yellow.
Spicules: Megascleres:
(1) Acanthostyles:
104 -160-221- 248 um.
x 6 -7-12- 14 um.
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(2) Tornotes:
116 -138-184- 265 um.
x 2-4-5- 6 um.
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Microscleres:
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(1) Anchorate Isochelae:
11 -13-21- 26 um.
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(2) Anchorate Isochelae:
27 -37-52- 59 um.
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(3) Sigmas:
12 -15-27- 34 um.
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(4) Sigmas:
31 -37-43- 54 um.
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Skeleton:
Ectosome: Obvious dermal membrane with numerous irregularly distributed Tornotes parallel to surface.
Choanosome: Moderately dense isodictyal reticulation of Acanthostyles with tracts of tightly bound Acanthostyles and Tornotes arising from the choanosome and penetrating the surface.
Distribution: Southern to Northern California.
Depth: Intertidal to deep water.
Note: Important discussion of this species on page 176.
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Monacts include one type with 2 size classes.
Sigmas of 1 size class.
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