李啟澤醫師的部落格

Phylum： Echinodermata 棘皮動物門

Class： Echinoidea 海膽綱

Family： Arachnoididae 蛛網海膽科

Scientific name： Arachnoides placenta

Chinese name： 扁平蛛網海膽

Author： Linnaeus, 1758

Size： 67.8 mm

Description： Sea urchin test diameter - 67.8 mm , test, taken by divers in Caubian Island , Cebu , Philippines .

Arachnoides placenta, 扁平蛛網海膽, Aboral view(反口面).

Arachnoides placenta, 扁平蛛網海膽, Oral view(口面).

Arachnoides placenta, 扁平蛛網海膽, Posterior lateral view(後端側面).

Arachnoides placenta, 扁平蛛網海膽, Apical system (頂系)

Combed areas (梳狀區) present (alternating rows of aligned accessory pores and tubercle rows)

Arachnoides placenta, 扁平蛛網海膽, Oral view(口面).

Arachnoides placenta, 扁平蛛網海膽, Peristome (口圍)

Arachnoides placenta, 扁平蛛網海膽, Periproct (肛圍) & Anus (肛門). Combed areas (梳狀區) present (alternating rows of aligned accessory pores and tubercle rows)

Arachnoides placenta, 扁平蛛網海膽, Lt. lateral view(左側面).

Arachnoides placenta, 扁平蛛網海膽, Posterior view(後端).

Arachnoides placenta, 扁平蛛網海膽, Apical system (頂系)

Combed areas (梳狀區) present (alternating rows of aligned accessory pores and tubercle rows)

Arachnoides placenta, 扁平蛛網海膽, Periproct (肛圍)