A history of British star-fishes, and other animals of the class Echinodermata . which groove their surfaces are morenumerous than in the other British Urchins, and theintermediate ridges very narrow, though slightly broaderthan the striae. There are no transverse striae on the 166 CIDARITES. .spines. The Pedicellarise seem to be very numerous andvery long. The specimen of this species which Mr. Ball kindlysubmitted to my examination, measured thirteen inchesand a half in circumference, and was three inches anda half in ILKPLE EGG-URCHIN. 167 CIDARITES

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Keywords: ., bo, bookcentury1800, bookdecade1840, bookidhistoryofbritish00forb