JOURN ACAD. NAT SCI. PH. LA.. 2ND SEP... VOL. XV 



PLATE XXXVII 



1 



1a 



1 



B 







3 





/ 



4 



4 



A 



1 











3 



5 



V 





5a 



4 



A 



7 



A 







7 







8 



/ 



J 



6 









V 





m 







9 



A 



, 



£ 



9c 



9 



B 







*, »*** 



PILSBRY: VARIATION AND ZOOGEOGRAPHY OF LIGUUS 



