[A]
Acanthostyles not embedded in basal spongin.
Subtylotes-Tylotes > 239 μm. |
| | Lissodendoryx (Lissodendoryx) sp. 3
[of Lee] |
Sponge:
Massive to 5 mm thick and 5.4 mm long.
Consistency: slightly compressible.
Surface: superficially smooth to somewhat granular, with thin, transparent ectosomal membrane; covered with numerous crowded oscula with raised sides, these underlain by parallel subtylotes.
Oscula: round to oval, 1 mm across.
Color: Not given.
Spicules: Megascleres:
(1) Acanthostyles:
248 -311- 354 um.
x 10 -11- 13 um.
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(2) Subtylotes-Tylotes:
227 -271- 296 um.
x 5 -6- 9 um.
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Microscleres:
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(1) Arcuate Isochelae:
23 -30- 36 um.
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Skeleton:
Ectosome: Packed with tangential Subtylotes - Tylotes and Arcuate Isochelae near surface.
Choanosome: Loose reticulation of Acanthostyles with ill-defined tracts to the surface. Otherwise, confused.
Distribution: Southern California.
Depth: Intertidal to deep water.
This species needs further study. It may belong to Hamigera.
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[B]
Cross section of echinating branching tracts of Acanthostyles. At the base of these tracts, Acanthostyle heads embedded into basal spongin.
Subtyloles -Tylotes < 239 μm
|
sp. B (Klontz, 1989) |
Sponge:
Thinly encrusting to 2 mm.
Color: Alive: Bright red.
Spicules: Megascleres:
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(1)Acanthostyles:
112 -206- 360 um.
x 8.0 -8.9- 12 um.
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(2)Subtylotes - Tylotes:
149 -206- 239 um.
x 4.0 -4.8- 6.0 um.
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Microscleres:
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(1)Arcuate Isochelae:
18 - 31 um.
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Skeleton:
Ectosome: Tightly packed Subtylotes perpendicular to and often protruding through the dermal membrane.
Choanosome: Acanthostyles with heads embedded in basal spongin and forming echinating branching tracts which rise to the surface. Isochelae not abundant.
Distribution: Southern California.
Depth: Intertidal.
Originally described as new genus, new species B. The species belongs to the Hymedesmiidae. It needs futher review to discern if it is Hymedesmia or Phorbas.
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