aes 
Proceedings of the Amer. Philos. Soc. Phila. Sept. 21, 1883. Vol. XXI. Page 236, 
i in 
a 
: \ An 
| iH t ns : i i i 
Fd 
Scale of Inches. 
a) 
BRM: ATLASES: Fe stth 
DoLIcHOCEPHALA LACOANA, Claypole, from the Catskill rocks ot 
Wyoming county, Pennsylvania. 
