[A]
Megascleres are sinuous Subtylostyles.
Microscleres include Sigmas of 1 or 2 size classes.
Largest Sigmas with mean > 64 μm.
Toxas present. |
de Laubenfels, 1930 |
Sponge:
Encrusting. Sponges flat, larger sponges with ridges and protuberences.
Consistency: spongy, compressible.
Surface: smooth to touch.
Color: Alive, chrome yellow, pale golden brown, olive brown, buff, tan.
Spicules: Megascleres:
(1) Sinuous Subtylostyles:
158 -247-285- 321 um.
x 4 -8-9- 12 um.
Microscleres:
(1) Sigmas:
14 -20-33- 33 um.
(may be missing) (2) Sigmas-may be contorted:
43 -64-75- 86 um.
(3) Anisochelae*:
11 -13-14 - 17 um.
(4) Anisochelae:
17 -18-25- 30 um.
(5) Anisochelae:
31 -36-41- 49 um.
(6) Toxa (rare):
5 -50-69- 118 um.
*small and medium classes may merge as one.
Skeleton:
Ectosome: thin demal membrane over a loose reticulation of megascleres.
Choanosome: spicule tracts to surface.
Distribution: Southern to Northern California.
Depth: Intertidal to subtidal, 9 m.
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Megascleres are Styles or Subtylostyles which are NOT sinuous.
Microscleres include Sigmas of 1 size class
Sigmas with mean < 60 μm.
Toxas ABSENT.
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