EXPLANATION OF PLATE LXVI. 



Sototodarus gouldi. 



Fig. L — Funnel of large ? [510], laid open along medio- 

 ventral line to shoM finmel f>rgan. 



Fig. 2. — Carpal region of left tentacle club of large ? [560], 

 oral aspect, showing the fixing apparatus. 



Fig. 3. - Right ventral arm and basal portion of left ventral 

 arm of an immature d' [553], sho^\ing advanced 

 stage in development of hectocotylus. 



Fig. 4. — Units 4-5 of ventral sucker-papilla series of right 

 ventral arm seen in greater magnification. 



Fig. 5.— Oral face of right ventral arm of an immature t? 



near base of niodified distal portion (Cf. PI. LXV., 



fig. 3). 

 Fig. G. — Oral aspect of right ventral anu of young r? [550]. 



shoAving early stage of development of hectoco- 



tvlus. 



