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Sea-Stars (Echinodermata: Asteroidea) from "Eltanin" Cruise 26, with a Review of the New Zealand Asteroid Fauna

[Figures]

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Figure 1.—Luidia neozelanica Mortensen (a) Abactinal paxillae and pedicellariae from near disc centre. (Sta. 1818: R/r = 132/20 mm.) (b) Abactinal, superomarginal and inferomarginal plates with enlarged inferomarginal spine (Sta. 1815: R/r = 15/3 mm.) Plutonaster fragilis n. sp. (c) Group of actinal plates, interradially, showing enlarged spines and pedicellariae. Note: one plate with 2 enlarged spines, (d) Adambulacral and actinal plates, about halfway along arm. (Sta. 1846; R/r = 75/22 mm.). Styracaster horridus Sladen (e) Adambulacral plates and spines and actinal plates and granules. (Sta. 1844; R/r = 44/8 mm.). Benthopecten pikei var. australis var. nov. (f) Superomarginal and abactinal plates and spinesfl (g) Adambulacral and inferomarginal plates, spines and pedicellariae. (type: Sta. 1846; R/r = 150/20 mm.). Mediaster sp. (h) Group of abactinal paxillae and papulae from midline of arms. (i) Adambulacral and adjacent actinal plates. (j) Group of adambulacral, actinal and inferomarginal plates. (k) Abactinal plates reflected, showing rods and papulae. Sta. 1818; R/r = 25/12 mm.). Sclerasterias mollis (Hutton) (1) Abactinal straight pedicellariae from proximal part of arms.—Note: toothed tips (Sta. 1847; R/r = 155/17 mm.).

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Figure 2.—Brisinga tasmani n. sp. (a) Madreporite, abactinal paxillae and naked membranous area at top. (b) Anus and surrounding plates. (c) Lateral view of arm near beginning of genital inflation showing 3 costae, pedicellariae, lateral plates and spines and adambulacral plates and spines. (d) Proximal fourth, fifth and sixth adambulacral plates and spines. (e) Three adambulacral plates and spines in region of genital inflation. (f) Adambulacral plates and spines near arm tip. (Sta. 1818—large specimen). N.B.—Arrows indicate direction of mouth.

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Figure 3.—Brisinga tasmani n. sp. (a) Crossed pedicellariae from abactinal surface. (b) Crossed pedicellaria from costal plates on genital inflation. (c) Single jaw of crossed pedicellaria from costal plates on genital inflation. (d) Crossed pedicellaria from adambulcral furrow spine. (e) Oral plates and spines. (Sta. 1818—large specimen). Brisingella or Astrostephane sp. (f) Lateral view of arm in genital region. (g) Lateral view of arm distally. (Sta. 1818). Stepnobrisinga or Astrolirus sp. (h) Lateral view of genital inflation. Note: small paving plates between costae. (i) Adambulacral plates and spines (Sta. 1844) N.B. Arrows indicate direction of mouth.