132 



The Lower Devonian Deposits of Maryland 



SPECIES 



Maryland 



New Jersey 



New York 



H 



Helderberg 



1 



1 



1; 



3 



! 



1 

 1 



' 



1 



o 







2 

 1 



1 



1 



1 

 1 



1 



Keyser 



s 



1 



1 



s 



1 



1 



i 





1 



1 



1 



1 

 1 



i 



5 



1 

 1 



•a 



! 



b 



^ 



1 





1 



1 



1 



1 



1 



1 



1 



1 



1 



1 



1 

 1 



^ 

 3 





ARTHRODODA-^OSTROCODA.-Continued. 

 Octonaria simplex (Krause) . ... 



















t 

 t 



•; 











•■ 









•• 









* 

 " 































Bythocypris punctulata var. arctatum U. & B.. 





t 





t 

 + 



■■ 







:: 



Pontocypris mawii var. breviata (Jones) 



Pachydomella longula Ulrich & Bassler 













restricted to Maryland. 



