LEPADID^E. 



175 



the whole imbedded in a cavity excavated in 

 shells of Mollusks. 



A. lampas. Fig. 329 ; mag. *. 



Scalpellum (Leach). Valves twelve to fifteen ; 

 latera of the lower whorl fonr or six ; sub -rostrum 

 rarely present ; peduncle scaly. Male minute, 

 parasitic near the orifice. 



S. vulgare. Fig. 330 ; n. s. 



32G 



327 



328 



329 



330 



331 



Pollicipes (Leach). Valves from eighteen to 



one hundred and upwards ; latera of lower whorl 



numerous ; sub-rostrum always present ; peduncle 



scaly. 



P. cornucopia. Fig. 331 ; n. s. 



