288 



GASTEROPODA. 



Fig. 2i7.— rHYLMDTA. 



Oeder Cyclobeanchiata.* 



In this order the gills consist of a series of laminae 

 or pyramidal appendages, extending quite round 

 the body beneath the edge of the mantle (Fig. 228). 

 It embraces 



The Limpets {FateUse), the appearance of which is 

 well known to every sea-side visitor. 



Fig. 228.— limiet, 

 * kukXos, cuclos, a circle : branchicT, gills. 



