Identifying Sponges

Key to California Porifera (Page 018)

( From page 017 B) Surface hispid, or slightly hispid (velvety). Tylostyles not sinuous.
[A]
Ectosome with Tylostyles pointing out.
Tylostyles of 1 size class.
Surface velvety, hispid to 300 μm.
cc018A.jpg
Prosuberites sisyrnus de Laubenfels, 1930
Sponge: Encrusting to 1-2 mm thick. Surface: velvity, hispid to 300 μm. Oscula: and pores not evident.
Color: Preserved: Drab.
Spicules: Megascleres: (1) Tylostyles: 275 - 480 um. x 8.0 - 20 um.
Skeleton: Ectosome: With dense Tylostyles pointing outwards. Choanosome: With scant Tylostyles, scattered.
Distribution: Southern California
Depth: Deep water, 45 to 54 m.
Note: Not reported since deLaubenfels, 1930. Was Prosuberites sisyrnus.
[B]
Ectosome with Tylostyles scattered.
Tylostyles of 2 size classes.
Surface slightly hispid.
Suberites sp. Green and Bakus, 1994
Sponge: Thin encrusting to 1 mm thick. Consistency: firm but compressible. Surface: slightly rough, slightly hispid.
Color: Preserved:Tan.
Spicules: Megascleres: (1)Tylostyle: 91 -169- 210 um. x 3.0 -4.0- 5.0 um. (2)Tylostyle: 310 -435- 590 um. x 7.0 -9.0- 13 um.
Skeleton: Ectosome: Densely packed Tylostyles, in confusion but some with points up. Ectosome: difficult to distinguish from choanosome. Choanosome: With Tylostyles in confusion.
Distribution: Santa Maria Basin, Southern California.
Depth: Deep water, 64.5 to 123 m.
Note: Specimens considered by the authors as too small for species identification.
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