PLATE XXXII. 
LETTERING ON THE FIGURES. 
Gr. 2 = « » acrorhagia. Otho 9 5 5 56 Opilatile 
ad.tent. . . . adhesive tentacles. @s. . . . . « esophagus (stomatodeum). 
bw. = = « «= body wall. @s.gr. . . . . esophageal groove (gonidial 
D. .. . . . directive mesentery. groove). 
dend. tent. . . . dendritic tentacles. Oh o a o & 6 Ofing 
Gis 6 0 0 0 a Cala, {ste toe oO parapet. 
end. . . . . . endoderm. periph. tent. . . peripheral tentacles. 
end. msc. . . . muscular layer of endoderm. sph... . . . sphincter muscle. 
g. .. . «= .~ globular tentacles. eo 6 o 8 o WeSneh 
mM. . . . . « mesoglea. tent... . . = « tentacle. 
Wh o 6 6 6 9 Maeeubeiny ho 0 6 6 6 Neal 
m . . . . « nematocysts. wow. . . . . zooxanthelle. 
ml... . . . nervous layer of ectoderm. 
Actineria dendrophora (H. and §.), (p. 487). 
Figure. 
1. Sagittal section through a lobe of the oral disk, showing the dendritic and globular tentacles, 
x 10 diam. 
2. Sagittal section through a peripheral tentacle, x 10 diam. 
3, 4. Two aspects of the sphincter muscle, x 100 diam. 
Cryptodendrum adhesivum (Klunz), (p. 483). 
5. Vertical section through the upper portion of the column to show the position of the sphincter 
muscle, x 15 diam. 
6. Section through the sphincter muscle, x 100 diam. 
Actinotryx bryotdes (H. and §.), (p. 479). 
7. Vertical section through the upper portion of the column to show the sphincter muscle, 
parapet, and dendritic tentacles, x 15 diam. 
8. Section through the sphincter muscle, x 75 diam. 
9. Horizontal section through a portion of the oral disk, showing in the lower part of the figure 
the body-wall and the superior portion of the mesenterial filaments; the hollow stems of 
the tentacles are seen in the thick mesogloea of the oral disk arising in a linear manner from 
the endoceels, x 25 diam. 
[ 520 j 
