PIG. 131. ATLANTA. FIG. 132. CARINARIA. FIG. 133. CLIONE 



FIG. 134. 



FIG. 135. FIG. 136. 



FIG. 137. 



FIG. 134. OYSTER LARVA. (AFTER HOEK.) 



FIG. 135. SHELLED PTEROPODS: ABOVE, HYALEA; BELOW, STY- 



LIOLA. 



FIG. 136. VELIGER LARVJE: ABOVE, DORSAL; BELOW, VENTRAL. 

 FIG. 137. LARVA OF A POLYZOAN. 



FIG. 139. HALO- 

 BATES ("BLAKE"). 



FIG. 138. GLAUCUS ("BLAKE"). 



