The Echinoid Directory

Salmacis L. Agassiz, 1841, p. 8

[= Melebosis Girard, 1850, p. 364, type M. mirabilis (=Echinus sphaeroides Linnaeus, 1758); = Diploporus Troschel, 1866, p. 158; = Malebosis Cotteau, 1867, p. 813 (nomen vanum)]

Diagnostic Features
  • Test hemispherical to subconical in profile; ambitus relatively low; oral side relatively flat.
  • Apical disc dicyclic, with distinct ring of tubercles surrounding periproct. Periproct subcircular; no enlarged suranal plate in adults.
  • Ambulacral plating trigeminate with pore-pairs in oblique rows forming a single irregular adradial band; a few tubercles occur in amongst the pore-pairs. Plate compounding echinid-style. Each plate with a larger adradial primary tubercle and a usually smaller perradial secondary tubercle plus scattered miliaries.
  • Interambulacral plates elongate with primary tubercle usually distinct, flanked on either side by only slightly smaller tubercles, forming a row of up to 5 subequal tubercles. remainder of plate rahter naked with only sparse miliaries.
  • All tubercles imperforate and crenulate; ambulacral and interambulacral tubercles of similar size.
  • Well defined sutural pits at all triple junctions; horizontal tubercles only very exceptionally (S. belli) with small pits.
  • Peristome small with no effective buccal notches.
  • Spines short and simple.
  • Lantern camarodont.
Recent; Indo-West Pacific.
Name gender feminine
Salmacis bicolor Agassiz, in Agassiz & Desor, 1846, by original designation.
Species Included
  • S. bicolor (Agassiz, in Agassiz & Desor, 1846); Recent, Indo-West Pacific.
  • S. belli Doderlein, 1902; Recent, Malay archipelago.
  • S. roseoviridis Koehler, 1927; Recent, Indian Ocean.
  • S. sphaeroides (Linnaeus, 1758); Recent, Indo-West Pacific.
  • S. virgulata Agassiz, in Agassiz & Desor, 1846; Recent, Indian Ocean.
Classification and/or Status
Euechinoidea; Camarodonta; Temnopleuroida; Temnopleuridae.

Very like Temnopleurus but with only small angular pits confined to suture triple points.

Mortensen, T. 1943. A monograph of the Echinoidea Part III.2, Camarodonta 1. C. A. Reitzel, Copenhagen.