658 REPORT OF COMMISSIOjNER OF FISH AND FISHERIES. [156] 



Plate XXVIII. 



Fig. 105. Pleurobranchwa tarda V. Dorsal Tiew of a specimen in alcohol, two-thirds 

 natural size. 



Fig. 106. Scaphander noMlis Y., natural size. 



Fig. 107. Koonsia obesa V. Dorsal view of a specimen preserved a short time in 

 alcohol, in which the dorsal part of the hody is much contracted, two- 

 thirds natural size. 



Fig. 108. Issa ramosa V. & Em. Dorsal view of a living specimen, enlarged three 

 diameters. 



Fig. 108a. The same. Part of the odontophore, much enlarged. 



Fig. 109. Scyllwa Edwardsii V. Side view of a living specimen, two-thirds natural 

 size. 



Fig. 113. Glaucus margaritaceus. Ventral view of a nearly mature specimen, consid- 

 erably enlarged. 



Fig. 113 rt. The same. Dorsal Anew of a younger specimen, much enlarged; b, view 

 of a still smaller specimen. 



Fig. 123. Dentalium occidentale, enlarged four diameters. 



Fig. 124. The same. A small specimen of a more curved variety, enlarged tvro di- 

 ameters. 



Fig. 125. The same. View of a young specimen with more numerous sulcatiovs, 

 enlarged four diameters ; a, transverse section of the same. 



Fig. 126. Cadulus Pandionis V. & S., enlarged about three diameters; a, front view 

 of the anterior end to show the aperture. 

 Fig. 109 was drawn from life ;>y Ensign W. E. SaflFord, U. S. N. 

 Figs. 113 and 113 a were copied from sketches made at sea by Mr. A. 

 Baldwin. 



