200 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 23 



PLATE 12 



Cyclopecten exquisitus sp. nov. Holotype. Hancock expeditions sta- 

 tion 142-34, off Wenman Island, Galapagos Islands, in 100-150 

 fathoms. Height and length: 3.5 mm. (Hancock Foundation col- 

 lection. Photograph by R. V. George.) P. 



