Identifying Sponges

Key to California Porifera (Page 052)

( From page 051 A) Megascleres: Large Styles - Subtylostyles; mean length > 400 μm
[A]
Megascleres: Hastate Styles with Tornote points.
Microscleres: with NO Raphides present.
cc052A.jpg
Mycale (Carmia) bellabellensis (Lambe, 1905)
Sponge: Stalked, funnel-cup shaped. Height to as much as 900 cm or greater. Consistency: Fragile, spongy. Surface: rough. Oscula: very irregular in size and shape.
Color: Alive: Drab, yellow, light-brown.
Spicules: Megascleres: (1) Styles-hastate with tornote points: 352 - 420-534 - 594 um. x 8 -11-13- 15 um. Microscleres: (1) Anisochelae: 15 -33-46- 63 um. (2) Anisochelae: 53 -76-89- 96 um. (3) Sigmas-rare/absent: 36 -53- 70 um. (4) Toxas: reported rarely- but probably absent.
Skeleton: Thin dermal membrane. Ectosome with terminally expanded ascending fibers. Choanosome, cavernous with branched, coarse spicule bundles cored with Styles. Superimposed on this is a loose, irregular reticulation.
Distribution: Central to Northern California.
Depth: Deep water to 800 m.
[B] GO TO PAGE 053
Megascleres: Styles somewhat fusiform, with equal thickness along most of the length but tapering to one or both ends. Points Oxeote. Microscleres with Raphides present.
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