Prionocidaris glandulosa de Meijere 1904

Family: Cidaridae-Cidarinae

Order: Cidaroida

 

 

Locality: Philippines; Siquijor, 250 feet, 2006

Dimensions: 29 x 16 mm
longest spine 60 mm

Remarks: These sea urchins have darker genital plates showing a star-shaped figure, which is very conspicuous. Mortensen in his "A Monograph of the Echinoidea, I, Cidaroidea," descibes on p. 461 ff" and the "Key to the species Prionocidaris" some features, namely white spots or stripes on the collar and slightly upwards curved primary spines, which are missing here (or have I to use a microscope?). Following the key on page 436, a collar without spots and stripes should belong to Prionocidaris bispinosa. Under "colour" Mortensen mentions the primary spines as banded in their outer half with purplish-red and white. Apparently there are spines without such bands.

 

Locality: Philippines; Siquijor, 250 feet, 2006

Dimensions: 22 x 12 mm
longest spine 52 mm

 

Locality: Philippines; Siquijor, 250 feet, 2006

Dimensions: 27 x 18 mm
longest spine 54 mm