Species Overview

Staurocalyptus dowlingi (Lambe, 1893).

DEFINING CHARACTERS:

Discoctaster diameter >200 µm.

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SPONGE:

Shape: Saccate with all lateral and marginal projecting spicules as Diactins.
Color_Dry: Light brownish yellow.

HABITAT:

Benthic Region: Marine: Deep water
Distribution: Southern California extending north to Aleutian Id. Alaska.

Skeleton:

Composition: Silicate (hexactin)
Architecture: Entirely of loose spicules.

Megasclere:

Shape: Principal Diactins
Length: 2.20-4.10-9.00 mm

Megasclere:

Shape: Thick Prostal Diactins
Length: --60000 µ
Width: -300- µ

Megasclere:

Shape: Hypodermal Pentactins
Length-tangential ray: 420 -2060- 4350 µ
Length-proximal ray: 4.20-8.10-11.70 mm

Megasclere:

Shape: Small Diactins
Length: 590 -950- 1740 µ

Mesosclere:

Shape: Dermal Pentactins
Length-tangential ray: 64 -105- 166 µ
Length-proximal ray: 68 -99- 122 µ

Mesosclere:

Shape: Gastral Hexactins
Length-ray: 57 -85- 118 µ

Microsclere:

Shape: Oxyhexasters to Hemioxyhexasters
Diameter: 96 -127- 159 µ

Microsclere:

Shape: Discoctasters
Diameter: 184 -256- 310 µ

Microsclere:

Shape: Microdiscohexasters
Diameter: 16 -22- 27 µ