Temnopleuridae刻肋海膽科 - Salmacis屬的診斷特徵
英國自然歷史博物館(The Natural History Museum)針對Temnopleuridae刻肋海膽科之Salmacis屬的診斷特徵，列出以下9點特性以供參考：
Salmacis L. Agassiz, 1841,
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.
Distribution：Recent; Indo-West Pacific
Type：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.
Remarks：Very like Temnopleurus but with only small angular pits confined to suture triple points.
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