Achatinellidse 



PLATE 18 



4 



& - 1 



:?\ " - . 



IE 



f :T Jft ".< ' / i<*ffi 



/';,-;* 



' ='* 



6 



10 



1L 



. 



. 



.--" 



^ 



N.^- 



14 



15 



. 



< 



17 



