Identifying Sponges

Key to California Porifera (Page 246)

( From page 245 A) Clavules present. NO Scopules present.
[A]
Shaft of Anchorate Clavule smooth WITHOUT large thorns.
cc246A.jpg
Farrea occa Bowerbank, 1862 (Carter, 1885)
Sponge: A network of branching and anastomosing tubes 8 -20 mm diameter; wall about 1 mm thick.
Color: Beige ?Alive.
Spicules: Megascleres: (1) Uncinates: 1.07 -1.90- 2.35 mm. Mesoscleres: (1) Pentactins (tangential ray length): 158 -220- 280 um. (proximal ray length) 218 -269- 325 um. (2) Pileate Clavules: 204 -256- 285 um. (3) Anchorate Clavules: 213 -252- 305 um. Microscleres: (1) Oxyhexasters: (diameter) 54 -68- 80 um.
Skeleton: Framework one layer thick at the growing margin.
Distribution: Central California.
Depth: Deep water.
Note: Data from Carter's Japan specimen and from California RMM-1-6417. A cosmopolitan species sometime divided into 10 subspecies.
[B] GO TO PAGE 247
Shaft of Anchorate Clavule with a few large thorns.
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