Identifying Sponges

Key to California Porifera (Page 142)

( From page 141 B) Subtylotes, smooth NOT microspined. No Tornotes or Strongyles.
[A]
Styles 1 size class.
Styles may have a few spines on head.
cc142A.jpg
Lissodendoryx (Lissodendoryx) kyma de Laubenfels, 1930.
Sponge: Encrusting. Consistency: fragile and friable. Surface: superficially wavy, with troughs 2 mm deep. Oscula: not evident.
Color: Alive: Pale drab.
Spicules: Megascleres: (1) Smooth Styles: 350 um. x 24 um. (2) Styles with heads spined: 340 um. x 20 um. (3) Subtylotes (these incorrectly described as Tornotes): 205 um. x 5 um. Microscleres: (1) Arcuate Isochelae: 25 - 30 um.
Skeleton: Ectosome: Dermal membrane packed with tangential Subtylotes. Choanosome: Large Styles in confusion.
Distribution: Central California.
Depth: Deep water.
Note: Bakus, 1966, described this species from Washington and noted the presence of pore sieves which do not occur in Lissodendoryx. Measurements and illustrations are those of de Laubenfels. Cf. 142B and page 166A. This species in California needs to be thoroughly reviewed. While the "form" presented in 142B is the common one seen in California, it may be a different species from that described by de Laubenfels.
[B]
Styles 2 size classes.
Styles mostly smooth, few with spines, if any.
? Lissodendoryx (Lissodendoryx) kyma de Laubenfels, 1930 [In part, of Green & Bakus, 1994]
Sponge: Encrusting. Surface: undulating.
Color: Alive: Pale drab, brown-orange.
Spicules: Megascleres: (1)Styles: 176 -200-248- 327 um. x 10 -13-14- 16 um. (2)Styles : 362 -409-481- 547 um. x 17 -21-24- 27 um. (3) Subtylotes- Tylotes: 251 -307-327- 370 um. x 5 -7- 9 um. Microscleres: (1)Arcuate Isochelae: 30 -37-39- 47 um.
Skeleton: Ectosome: Dermal membrane with Isochelae, below which are Tornotes more or less tangential to the surface. Choanosome: Dense mesenchyme with ill-defined tracts to surface. These crudely echinated by Styles. The tracts form a loose reticulation.
Distribution: Southern to Northern California.
Depth: Intertidal to deep water.
Note: This form differs from the original description by having mostly Styles. If spined they are usually not as pronounced as those described by de Laubenfels. This is the most common form in California. Measurements and photographs of several specimens. See 142A and Pages 196A, and especially 166A.
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