BAHAMA MEDUSA. 
38 
PLATE VI. 
Fig. 53. Olindias tenuis. 
" 54. 
Mature medusa. 
Side view of bell-margin, showing that the 
short tentacles arise from the sides of the 
bell above the margin, while the long flex- 
ible tentacles arise from the bcll-margiu. 
The short tentacles have each a sucker-like, 
nematocyst-pad upon the aboral side of 
their distal ends; while the long flexible 
tentacles have numerous half-rings on 
their inner, and a well developed strand 
of longitudinal muscle fibres upon their 
outer sides. 
" 55-57. " " Successive stages in the development of the 
sucker-like nematocyst-pad upon the 
aboral side of the short tentacles in 
medusffi the diameter of whose bells are 
respectively 3 mm., 8 mm. and 16 mm. 
" 58. " " Side view of a portion of one of the long 
tentacles showing the half-rings of nema- 
tocysts on the inner and the strand of 
longitudinal muscle fibres on the outer 
side. 
" 58a. " '^ Extremity of one of the long flexible ten- 
tacles showing the terminal knob of 
nematocysts, and the pad-like thickening 
upon the outer side of the tentacle, com- 
posed of closely crowded elongate nema- 
tocyst cells. 
" 59. " " View of one of the gonads. 
PLATE VII. 
Fig. 60. "Tamoya punctata," Fewkes. 
" 6L Tamoya haplonema, F. Miiller. Side view, natural size. Specimen from 
Great Peconic Bay, Long Island, New 
York. 
" 62. " " View of canals in the velarium. 
" 63. " " The sensory club seen from the centripetal 
side. 
" G4. " " The sensory club seen from the side, showing 
ectodermal eyes, and cntodcrmal otolith. 
" 65. Section through the gonad of Showing that the entoderm and ectoderm 
Eucheilota pamdoxica. of the bud arc derived directly from the 
same layers of the gonad. ect, ectoderm ; 
ent, entoderm, b, gonad of the budding 
medusa. 
