1913] 



The Ottawa Naturalist. 



123 



X 3 (about). 



Fig. 1. Mycetomorpha viewed from the ventral, lower side. 



Fig. 2. Mycetomorpha upper or dorsal side, showing chitinous ring around 

 the peduncle, and anterior spike. 



Fig. 3. Diagram showing position of some organs, and bay on one side 

 where mantle duct opens (ea). ; "3 



Fig. 4. Diagram of visceral mass, peduncle and roots in section. 



Fig. 5. Diagram of side view of Mycetomorpha attached to the shrimp, 

 ea. external aperture of duct p. peduncle of attachment 



gl. modified collcterial gland rs. root-system 



1. lobes of Mycetomorpha sp. chitinous spike 



m. mantle vm. visceral mass, 



mc. mantle cavity 



