Bodega Marine Laboratory is fortunate to have the opportunity to share this excerpt from the 4th edition of Light's Manual:
From Cohen, Anne C., Dawn E. Peterson, and Rosalie F. Maddocks. Ostracoda, pp. 417-446, In: James T. Carlton, ed., The Light & Smith Manual: Intertidal Invertebrates from Central California to Oregon. Fourth Edition. (Berkeley: University of California Press) 1140 pages.