[A]
Styles to Tylostyles, straight., Acanthostyles; acanthose on head and shaft, NOT on point. Megascleres Styles to Tylostyles. Tylostrongyles to Subtylostrongyles and Acanthostyles to Acanthosubtylostyles with intermediates. |
| | Phorbas californiana
(de Laubenfels, 1932) |
Sponge:
Thickly encrusting, amorphous.
Consistency: fragile.
Surface: smooth with small, tubercles and a few smooth ridges.
Oscula: 0.5 to 0.75 mm. flush.
Color: Alive: Drab.
Spicules: Megascleres:
(1) Style - Tylostyles:
162 -224-255-289 um.
x 2 -4-6-7 um.
(2) Tylostrongyles:
222 -247-265- 294 um.
x 3 -5-7-10 um.
(3) Acanthostyles:
166 -238-260- 311 um.
x 3 -6- 7 um.
Note:: The three basic spicule types often highly modified; difficult to distinguish between one type and another.
Skeleton:
Ectosome: Fleshy dermal membrane with mostly tangential Tylostrongyles and Acanthostyles.
Choanosome; With isolated tracts and scattered spicules.
Distribution: Southern California
Depth: Intertidal to subtidal
Note: Was formerly Myxilla versicolor californiana and needs to be compared to Phorbas hoffmani.
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[B]
Styles, straight and bent. Acanthostyles, bent; acanthose on point. Megascleres Styles and Acanthostyles.
|
| | Endectyon (Hemectyon) sp.
(Green & Bakus, 1994) |
Sponge:
Branching projections 1-2 mm tall from encrusting base; no stalk.
Surface: Surface finely hispid. Crusty, prickly.
Color: ? Alive, white.
Spicules: Megascleres:
(1)Styles:
280 -558- 730 um.
x 16 -25- 31 um.
straight and with head end bent.
(2)Acanthostyles:
230 -305- 460 um.
x 18 -22- 26 um.
-acanthose on pointed end.
Skeleton:
Plumose with axial core of Styles and echinating Acanthostyles.
Distribution: Southern California, Santa Maria Basin.
Depth: Deep water, 90 to 130.5 m.
Note: Related species all have stylote or oxeote Rhaphides. These are microscleres only by relative size. See dichotomy 2B for other related species or page 33. Was originally Hemectyon sp.
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