Identifying Sponges

Key to California Porifera (Page 223)

( From page 221 A) Triradiates > 100 μm.
[A]
Triradiates 9 - 182 μm.*
cc223A.jpg
Clathrina coriacea (Montagu, 1818) [of Sim & Bakus, 1986]
Sponge: Encrusting mass of anastomosing tubes to encrusting with vents scattered over surface.
Color: Alive? White to tan.
Spicules: Megascleres: * (1) Triradiates (equal to subequal rays): 14 -73-76- 182 um. x 4 -10- 23 um. (2) Triradiates (equal to subequal): 5 -9-10- 14 um. x 1 -2- 2 um. (3) Saggital Triradiates: 23 -39-42- 66 um. x 5 -6- 7 um.
Skeleton: No information.
Distribution: Southern to Northern California.
Depth: Intertidal to deep water.
Note: * Variously reported with a wide range in spicule measurements and types of Triradiates. (1) Sim & Bakus, 1986: Regular Triradiates 100 - 110 μm, (2) Bakus & Green,1987: Regular Triradiates 5 - 14 and 14-182 μm, (3) Sagittal Triradiates 23 - 66 μm, (4) Green & Bakus, 1994: Regular Triradiates, the size range varies considerably (from 9 - 97 to 40 - 182 μm, unpublished data). This could well be a complex of related species. Known from England.
[B]
Triradiates 0.1 to 0.8 mm.
Leucetta sagittata Haeckel, 1872 [of de Laubenfels, 1932]
Sponge: Mass of anastomosing tubes 35 - 70 mm Tubes: 2 - 5 mm thick. Surface: smooth.
Color: Preserved: Brown.
Spicules: Megascleres: (1)Triradiates: 0.1 - 0.8 mm. x 0.01 - 0.06 mm.
Skeleton: Leuconoid.
Distribution: Unknown. West coast of North America, California.
Depth: Unknown.
Note: Not seen since first described. Cited as Leucetta, Haeckel, 1872, Leucandra, Dendy & Row, 1913 and Leuconia, de Laubenfels, 1932.
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