Identifying Sponges

Key to California Porifera (Page 230)

( From page 229 B) Sponge NOT tubular.
[A]
Sponge flask OR vase shaped, 5 mm diameter, 6 mm high.
Microxeas present.
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Sycon coactum (Urban, 1905) [of de Laubenfels, 1932]
Sponge: Sponge flask- or vase-shaped, 5 mm diameter, 6 mm high. Surface: reticulate, hispid. Oscula: erect oscular crown.
Color: Preserved: White.
Spicules: Megascleres: (1) Oxeas (coronal): 500 um. x 3 - 10 um.
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(2) Oxeas: 1000 um. x 35 um.
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(3) Triradiates-Quadriradiates (rays): 90 um. x 10 um. mostly saggital.
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Microscleres:
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(1) Microxeas: 40 um. x 2 um.
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Skeleton: Syconoid.
Distribution: Central California. Monterey Bay.
Depth: Intertidal.
Note: Noted by de Laubenfels, 1932, but not seen in the field by de Laubenfels, or since reported. Burton, 1963 reports somewhat different measurements. See Burton, 1963, pg. 372 for details.
[B] GO TO PAGE 231
Sponge cylindrical.
Microxeas absent.
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