ASTERIAS. 159 
Fig. 92.--ABORAL DISSECTION OF A COMMON STARFISH. (4d zat.) 
Ovoid Gland. 
Pyloric Part 
of Stomach. H 
Madreporite. 
Ampulle. 
Cardiac Part 
of Stomach. 
Anus, 
Gonads. 
Anal Glands. 
Pyloric Glands. 
Tube Feet. 
The lower right arm is turned over to show the oral surface ; the lower left arm has its 
aboral wall removed and the upper left arm has the pyloric glands removed. 
