540 Records of the Indian Museum. [Vor. XI, 
Cnidoblasts of the nodal cells. 
Insurface view of a tentacle-node a regular arrangement of 
cnidoblasts is apparent (see pl. xxxa, fig. 7). Round an individual 
of large size circles a group of smaller cnidoblasts. The latter are 
set singly and more or less regularly on an imaginary circumference, 
A 
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Q 
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3 
IWAN 
TEXT-FIG, I. 
Large type of cnidoblast (macrocnide) from nodal cell. 
Undischarged cnidoblast and its connections 7 srt (X approximately 
4000 diameters). 
B. Discharged nematocyst (X approximately 3000 diameters). 
B,, B,, major and minor barbs ; CNC, cnidocil; CYT, cytoplasm ; ECT, 
external wall of ectodermal cell; FIL, filament ; G, ganglionic mass , 
GUB, gubernaculum,—protoplasmic strand supporting central tube ; 
MES, mesogloea of tentacle; N, nucleus ; NEM, nematocyst; NF, 
nerve fibril; OP, operculum ; PR, layer of protoplasm lining bottom 
of cell; T, central tube. 
A. 
