454 



BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 



orifice of ovicell \o. 



cardelle 



median avicularitan- 



interareolar costule 



areola 



pleurocyst-- 



V 



pivot of avicularium 

 "beak 



N oo 



ovicell 



-l.yrula 



peristome 



peristomice 

 peristomie 

 ~lyrula 



areolar pore 



*- -olocyst 



I 



granular pleurocyst 



FIG. 130. Anatomy of the SmittinUae. 



