I'LATE 14. 



Cross sections of Proiicomenia liawaiieiisis. X 33. 



Figs. 1, 2, 7 oorrfsjiond to liiir-s A, B, C in lif!;. 2, y\. r, (anterior cml) ami figs. 5, {), S to D, E, F 

 in fig. 4, pi. 13 (posterior end). In lig. 1. ini, oin represent inner anil ouli'r atrial riilge; os, external 

 sensory ridge. 



Fig. 3. Seel inn tlirough middle of liody. 



Fig. 4. Section throngli animal aliout one liflU body length from anterior end. 



Fig. 9. Section throngh liody a slmrt dislaiiee behind pharynx. 



