Identifying Sponges

Key to California Porifera (Page 115)

( From page 114 A) Acanthostyles or Acanthosubtylostyles present; NO Acanthoxeas.
[A]
Acanthostyles with only pointed end spined.
Styles present.
cc115A.jpg
Endectyon (Endectyon) hyle (de Laubenfels, 1930)
Sponge: Stalked, frondose. Consistency: spongy to cartilaginous. Surface: superficially smooth, finely hispid, prickly. Oscula: and pores not evident.
Color: Preserved: Pale drab. Alive: brick red.
Spicules: Megascleres: (1) Acanthostyles -pointed end spined; smooth end bent: 180 - 320 um. x 12 - 20 um. (2) Styles: 430 - 550 um. x 15 - 20 um. (3) ? Styles- long-smooth (broken-not identifiable): >800 um. x 10 um. (4) Strongyles: 350 - 370 um. x 16 - 19 um. Microscleres: (1) Oxeote Rhaphides: 200 - 330 um. x 2 um.
Skeleton: Ectosome a dermal membrane 75 μm thick, with scattered dark cells and foreign bodies. Choanosome divided into axial and peripheral regions. Axial with smooth styles in confusion or trace of a reticulation. Peripheral: dense, with Acanthostyles pointing outwards.
Distribution: Southern California.
Depth: Deep water, 36 m.
Note: Taken from original description and with de Laubenfels' illustrations. See page 33A and 33B. Was Hemectyon hyale.
[B] GO TO PAGE 116
Acanthostyles with spines at head end or over entire body.
Styles usually not present with the exception of rare or juvenile acanthostyles that look like styles.
May have Tylotes-Subtylotes OR Strongyles.
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