99 



K. MlTSüKUm : STUDIES ON 



Tlio two roinaiiiiiig rows arc oacli on tlio edge of tlio border be- 

 tween the dorsum and the ventruni ; each runs in a somewhat 

 zigzag way and consists of about 2(] — 30 papilla3. Ventral pedicels 

 in three zones ; each of the two lateral zones with pedicels in 

 two rows and placed nearly alternately near the c^dge of the ventral 

 surface. The median zone in the middle part consists of 3 — -4 rows 

 of alternately placed pedicels ; anteriorly and i)osteriorly, the rows 

 are reduced somewhat in number. Eotli papilla and pedicel seem 

 to have a somewhat enlarged base, but this does not seem to be so 

 large or prominently conical in shape as in Synallactes trlradiata. 



Tentacles 20. Genital bundles two, one right and one left. 

 Polian vesicles two, botli long and large, about 2 cm. long. Cal- 

 careous ring as shown in textfig. 4 (t. Tentacular ampullae as in 

 other synallactids, in the form of sliort out-bulgings. 4iCspiratory 

 trees present. Owing to defective preservation, it is difficult to 



Textfig. 4. 



Si/naliactes isfiilaaoai : 

 a — Calcareous ling ; h — 

 Tiililc-like body uf ven- 

 tral perisome ; <■ — Same 

 of dorsal pcrisorue ; d — 

 Supporting; rod of dorpal 

 papilla ; ('. / — rods of 

 ventrum. (h — -/ x IßU). 

 I — Intcrradialia ; 11 — 

 Eadialia,. 



