Identifying Sponges

Key to California Porifera (Page 256)

( From page 255 A) Dermalia are Pinular Hexactins.
[A]
Principalia are large Pentactins with short apical ray.
cc256A.jpg
Holascus edwardsi Lendenfeld, 1915
Sponge: Tubular or slightly infundibuliform.
Color: Dark brown in alcohol.
Spicules: Megascleres: (1) Principal Pentactins: Length-tangential ray 7 - 19 mm. Length-apical ray - 1.5 - mm.
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(2) Pinular Hexactins (dermalia): Length-distal ray 160 -219- 293 um. Length-tangential ray 165 -252- 387 um. Length-proximal ray 0.33 -1.06- 1.72 um.
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(3) Comital Triactin:
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Length-paired ray um. Length-unpaired ray 0.08 -0.71- 1.68 um.
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(4) Diactins: 0.30 -0.47-1.15 um.
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(5) Basal Anchors: to 45 mm.
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Microscleres:
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(1) Oxyhexasters: 104 -145- 185 um.
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(2) Graphiocome (centrum): 11 - 17 um.
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(3) Graphiocome (raphides): 111 -194- 350 um.
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Skeleton: Only loose spicules; fusion unknown.
Distribution: Southern California.
Depth: Deep water.
Note: These data partly from Lendenfeld, 1915, and cotype MCZ 6836.
[B]
Principalia are NOT large Pentactins with short apical ray.
Caulophacus schulzei Wilson, 1904
Sponge: Stipate with upper shallow calyx.
Color: Grey-brown in alcohol.
Spicules: Megascleres:
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(1)Principal Diactins: 1 - 4 mm.
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(2)Principal Hexactins: Length-ray 0.7 - 1.2 mm.
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(3)Pentactins: Length-tangential ray 0.25 - 1.1 mm. Length-proximal ray 0.6 - 1.1 mm.
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Mesoscleres:
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(1) Pinular Hexactins: Length-distal ray 140 - 390 um. Length-tangential ray 80 - 165 um. Length-proximal ray 70 - 145 um.
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Microscleres:
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(1)Discohexaster: 139 - 264 um.
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(2)Discohexaster: 200 - 300 um.
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(3)Discohexaster: 70-160 um.
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Skeleton: Body with loose spicules; Diactins of stalk fused by synapticulae.
Distribution: Southern California.
Depth: Deep water.
Note: Known only growing on Hyalonema roots. These data partly from Wilson,1904,and Lendenfeld, 1915.
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