PROC. ACAD. NAT. SCI. PHILA. 1903. 



PLATE XLVII. 



la 



1. 



3 a 



1 , I I ii L*.4ii 



lb 



mffi 



3b 



* -ia 



2b 



■wrrfW~" 



-% 



4b 



5. r»** 5 a 1/ \ / 6 a 



PILSBRY. NEW MEXICAN MOLLUSCA. 



6b 



