PROC. ACAD. NAT. SCI. PHILA. 1912. 



PLATE XII 



b. 



be. 



fr§V e - 



ib 



■ -■' 



fk'A"4'''--f'"--'v'- *: 



">C Y>~cV 'f- 



nt -^ - | ft 





be. s 



%3- 



te. 



'■*. . 



ib. 



■ 7 £?K?*b 



" ;; ^' : - 



)mg>- 



ib. 



vd. 



ps. 



ag- 



HEATH AND MCGREGOR; NEW POLYCLADS. 



