REGENT RESEARCHES 0:S THE RADIOLARIA. 

 Fig. 15. 



169 



Fig. 16. 



Borataspis polyancistm. Fig. 15. Young. Fig. IG. Mature. (After Haectel.) 

 LTNN. JOITRTiT. — ZOOIOGT, TOL. XIY. 12 



