Salmaciella dussumieri 31.12mm

Phylum： Echinodermata 棘皮動物門

Class： Echinoidea 海膽綱

Family： Temnopleuridae 刻肋海膽科

Scientific name： Salmaciella dussumieri

Chinese name：

Author： ( Agassiz , 1847)

Size： 31.12mm

Description： taken with tangle net in Oslob, Cebu , Philippines .

Reference： http://www.nhm.ac.uk/research-curation/research/projects/echinoid-directory/taxa/taxon.jsp?id=1329

 

並請參考自戀兄已貼上的文章

Test：http://tw.myblog.yahoo.com/chen048940-5952/article?mid=3826&prev=3827&next=3816

Test with spine： http://tw.myblog.yahoo.com/chen048940-5952/article?mid=3829&prev=3830&next=3828&l=d&fid=64

 

 

 

• Test depressed and low conical in profile with flat oral surface and deeply sunken peristome.

• Distinct naked interradial zone adapically.

• Small pits at all interradial and perradial suture triple points; horizontal sutures also slightly incised adapically.

• Peristome small and deeply invaginated, with feeble buccal notches.

• Test depressed and low conical in profile with flat oral surface and deeply sunken peristome.

• Apical disc dicyclic or hemicyclic (ocular I may be insert), with distinct ring of tubercles on genital plates surrounding periproct. Periproct opening relatively large and circular. Suranal plate distinct in juveniles but not adults.

• Interambulacral plates elongate with row of 3 or 4 subequal tubercles on subambital plates. Above the ambitus there is only a single primary tubercle to each plate. Aboral plates rather naked especially adapically.

• Primary tubercles imperforate and strongly crenulate.

• Ambulacral plating trigeminate with compounding in echinid style. Pore-pairs offset forming a single broad adradial band.

• One primary tubercle to each ambulacral plate adorally;at the ambitus and subambitally these tubercles alternately offset so as to form a double column of primary tubercles. Above the ambitus primary tubercle on every second compound plate only.