SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 107, NO. 16, PL. 1 



t 



A 



r\ 





\ 



i. -^ kr--- 



i 





\ 



11 



r 



'^: 



JS 



y^^^^^^^^^^ I 



Charles T. Simpsons Types in the molluscan Genus Liguus 



(For explanation, see p. 8.) 



