[51] MEDUSJi PROU THE GtlLF STREAM. 977 



PLATE II. 



Tho same from the subimihiul Hide. Five, murivinal .socles of sense- bodies ou left 

 side, with marginal lappets inward. 



PLATE Hi. 



Fig. 1. Aiolla Bairdii, lateral view with exumbral surface thrown into perspective. 

 Fig. 2. Three tentacular socles and two rhopalia from the corona, showing their rela- 

 tion to the coronal furi'ow. 



PLATE IV. 



AtoUa Verrillii, from exumbral side. 



PLATE V. 



Fig. 1. A. Quadrant of ^1. PVrn/ii, from subnmbral side, with organs entire, i?. Quad- 

 rant from exumbral side. C. Quadrant from siibumbral side (Interradial), ovaries 

 removed. D. Quadrant from subumbral side (Perradial), ovaries removed. 



When the quadrants are entire there are twenty-two tentacles. 



PLATE VI. 



Fig. 1. Nauphantopsis DiomedecB, lateral view. 

 Fig. 2. The same, exumbral view. 



PLATE VII. 



Fig. 1. Ephyroide8 rotaformis, exumbral surface. 



Fig. 2. View of three exiuubral socles (soc), and three marginal lappets from exum- 

 bral surface. 



PLATE VIII. 



Fig. 1. Halicreas minivmm, exumbral surface. 



Fig. 2. The same, subumbral surface. 



Fig. :i. The same, with more thickly tuberculated marginal prominence. 



Fig. 4. Side view of Halicreas. 



PLATE IX. 



Fig. 1. Sohnaris incisa, life size, divided into four quadrants, of which (1) shows the 

 disk from above, with velariam entire and turned downward ; (2, 4) thedisk 

 from above, with the velarium broken up into " marginal lappets " {mg. Ip.) ; 

 (3) bell from below (subumbral). 



PLATE X. 



Fig. 1. 'Po\y])ite of Pte]0})hysa f/randis. 



Fig. 2. The same, from convex side. 



Fig. 3. The same, from concave side, slightly inclined to observer. 



Fig. 4. Angelopsis glohosa, lateraj view. 



Fig. 5. Section of last, showing interior. 



Fig. 6. Stem (portion) of Rhizophysa uvaria, with float. 



The drawings of all the figures were made from nature bv the author. 

 H. INIi.s. as 62 



