The Echinoid Directory

Salmacopsis Doderlein, 1885, p. 93

Diagnostic Features
  • Test small, subglobular.
  • Apical disc generally dicyclic, with distinct ring of tubercles surrounding periproct. Gonopores marginal. Periproct subcircular
  • Ambulacral zones about two-thirds width of interambulacral zones; plating trigeminate. Pore-pairs forming a single weakly arcuate band.
  • One primary tubercle to each ambulacral plate adapically with naked perradial zone; two subequal tubercles on ambital and subambital plates.
  • Interambulacral plates relatively tall with distinct naked interradial zone to ambitus. Primary tubercle usually distinct on adapical plates; with three subequal tubercles on subambital plates.
  • Primary tubercles imperforate and non-crenulate.
  • Small pits at sutural triple junctions adapically in both interradial and perradial zones.
  • Peristome small, flush with almost no buccal notches; membrane almost naked with small buccal plates only.
Recent; Japan.
Name gender feminine
Salmacopsis olivacea Doderlein, 1885, by original designation.
Species Included
  • S. olivacea Doderlein, 1885; Recent, Japan.
  • S. keiensis Mortensen, 1942; Recent, Kei Islands.
Classification and/or Status

Camarodonta; Temnopleuridea; Temnopleuridae.

Treated as a subgenus of Microcyphus Agassiz, 1846.


Doderlein, L. 1885. Seeigel von Japan und Lui-Kiu-Inseln. Archiv fur Naturgesch. 51 (1), 73-112.

Mortensen (1943), while recognizing there were distinct species groups within Microcyphus, chose to keep all within the same genus, including Salmacopsis olivacea.

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