Identifying Sponges

Key to California Porifera (Page 068)

( From page 067 A) Microscleres include Sigmas.
[A]
Microscleres include Anisochelae.
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Mycale (Rhaphidotheca) marshallhalli (Kent, 1870) [of Green & Bakus, 1994 as Mycale (Rhaphidotheca) rhopalophora]
Sponge: Digitate. Consistency: firm. Surface: rough, hispid.
Color: White ? Alive .
Spicules: Megascleres: (1) Exotylotes: 400 -405- 450 um. (2) Subtylostyles: 310 -375- 440 um. Microscleres: (1) Anisochelae: 26 -26- 31 um. (2) Anisochelae: 91 -95- 104 um. (3) Sigmas: 55 -58- 62 um. (4) Rhaphides(as Trichodragma): 52 -62- 70 um.
Skeleton: Exotylote heads protrude from surface. Choanosome with ascending tracts of Subtylostyles which ramify from base to surface.
Distribution: Southern California.
Depth: Deep water, 75 to 123 m.
Note: This species was identified by Green & Bakus from fragments. Spicule measurements of Schmidt's R. rhopalaphora are quite different from those reported by Green & Bakus. Anisochelae reported by Green & Bakus are identical to Mycale sp. 3 of Lee (see page 054A) suggesting possible contamination. Evidence of California Rhaphidotheca is available, but thus far all specimens seen have either been contaminated or incomplete.
[B] GO TO PAGE 069
Microscleres do NOT include Anisochelae.
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