650 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [148] 



Plate XXIV. 



• 

 Fig. 66. Pleurotoma Dalli, enlarged two diameters. 



Fig. 66 a. The same. Side view of the anterior whorls, enlarged two diameters. 

 Fig. 67. Pleurotomella Agassizii V., enlarged two diameters. 



Fig. 68. Pleurotomella Bairdii V. Female, enlarged one and ouo-half diameters. 

 Fig. 69. Pleurotomella Pandionis V., enlarged one and one-half diameters. 

 Fig. 70. Pleurotomella Benedlcti V. & S., enlarged three diameters. 

 Fig. 70 a. The same. To show unclear whorls, enlarged twenty-two diameters. 

 Fig. 71. Pleurotomella Sanderaoni V., enlarged six diameters. 

 Fig. 71 a. The same. To show nuclear whorls, enlarged twenty-two diameters. 

 Fig. 72. Pleurotomella Saffordi V. & S., enlarged four diameters. 

 Fjg. 73. Pleurotomella handella, enlarged four diameters. 

 Fig. 74. Pleurotomella Emertoni V. & S., enlarged three diameters. 



Fig. 68 was drawn by Ensign W. E. Saftord, U. S. N. The others, by J. H. 

 Emerton. 



