Identifying Sponges

Key to California Porifera (Page 254)

( From page 253 B) Hexasters present.
[A]
Spirodiscohexasters and Drepanocomes present.
cc254A.jpg
Saccocalyx pedunculatus Schulze, 1895
Sponge: Stipitate: Cup with lateral diverticula on long hollow stalk.
Color: White, ?Alive.
Spicules: Megascleres: (1) Diactins: 1.18 -2.18- 5.06 mm. (2) Pinular Hexactins (distal ray): 392 - 496- 595 um. (tangential ray): 116 -203- 297 um. (proximal ray) 106 -373- 604 um. (3) Hexactins (ray): 258 -738- 1341 um. Microscleres: (1) Spirodiscohexasters (diameter): 118 -147- 176 um. (2) Drepanocomes (diameter): 142 -265- 329 um. (3) Aspidoplumicomes (diameter): 50 -65- 76 um.
Skeleton: Cup with loose spicules; stalk with diactins fused by synapticulae.
Distribution: Northern California.
Depth: Deep water.
Note: The specimen described as Nubicaulus careyi by Reiswig, 1999, was synonymized to Saccocalyx pedunculatus by Tabachnick, 2002. All data and figures from CASIZ 113632. Cosmopolitan.
[B] GO TO PAGE 255
Spirodiscohexasters and Drepanocomes NOT present.
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