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.


 


 


DistributionRecent; Indo-West Pacific


 


 


 


TypeSalmacis 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 StatusEuechinoidea; Camarodonta; Temnopleuroida; Temnopleuridae.


 


 


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


 

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