Metalia sternalis Lamarck 1816 

Family: Brissidae

Order: Spatangoida

Locality: Philippines, Olango Island, 50-75 m, by tangle nets 2009

Dimensions: 155 x 135 x 80  mm


Compared with my former, probably more juvenile specimen, this one shows the posterior petals more fused, a conical cross-section in the upper part, the vertex just in front of the apical system, sloping down to the steep rear end, and a sunken area below the anal opening.