Identifying Sponges

Key to California Porifera (Page 226)

( From page 224 B) Oxeas to > 300 μm.
[A]
Oxeas to 1000 μm.
Oxeas of 2 size classes.
cc226A.jpg
Leucosolenia nautilia de Laubenfels, 1930
Sponge: A basal reticulation from which arise numerous long individual tubes. Tubes: 0.2 - 2 x 20 mm. Consistency: fragile. Surface: minutely hispid. Oscula: apical.
Color: Alive: White.
Spicules: Megascleres: (1) Oxea (small): 80 -115- 160 um. x 4 um. (2) Oxea (large): 320 -445- 1000 um. x 10 - 20 um. (3) Quadriradiates: apical ray: 20 -28- 50 um. paired rays: 80 -100- 120 um. basal ray: 120 - 150 um. (4) Triradiates: paired rays 50-75-100 um. basal ray: 50-77-140 um.
Skeleton: Asconoid.
Distribution: Southern to Northern California.
Depth: Intertidal to deep water.
[B] GO TO PAGE 227
Oxeas to < 750 μm.
Oxeas of 1 size class.
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