Species Overview

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KeyPics/cc081A.jpg

Xestospongia diprosopia (de Laubenfels, 1930)

Synonyms:
Haliclona diprosopia (de laubenfels, 1930).

SPONGE:
Shape: Lamellate; subspherical
Size_thickness: 1-4 cm
Color_Dried: Pale drab
Consistency: hard friable
HABITAT:
Benthic Region: Marine: Deep water
Depth: - 500- m
Distribution: Central California

CHARACTERS

Surface:
Texture: superficially smooth; Strongly hispid
Contour: low rounded protuberances: 5-15 mm high on oscular surface
Oscula:
Distribution: on one side only
Diameter: -3-] mm
Distribution: 15 mm apart over shallow branching
Skeleton:
Composition: Silicate
Architecture: highly dense reticulate network of short multispicular tracts interconnected by only a few oxeas or bundles of 4-6 oxeas. Meshes tend to be polygonal. Reticulation finer near surface.
Ectosome:
Architecture: a tangential disordered network of spicule brushes
Choanosome:
Architecture: highly dense reticulate network of short multispicular tracts interconnected by only a few oxeas or bundles of 4-6 oxeas. Meshes tend to be polygonal. Reticulation finer near surface.
Pores:
Distribution: Non-oscular side with numerous ostia at least 10 Ám in diameter
Megasclere:
Shape: Oxeas
Length: 205 -(296|352)- 450 Ám
Width: 8 -(10|23)- 30 Ám