5 16 NEW YORK STATE MUSEUM 



PLATE 14 



Genus didymograptus McCoy 

 Didymograptus subtenuis (Hall) 



Page 253 



I, 2 Type specimens (cotypes) redrawn in natural size 

 Normanskill shale, Kenwood, N. Y. 



Didymograptus sagitticaulis Gurley 



Page 247 



3 Type specimen (cotype) of D. Sagittarius redrawn in natural size 



Normanskill shale, Kenwood, N. Y. 



Didymograptus serratulus (Hall) 



Page 251 



4 One of the type specimens (cotype) redrawn in natural size 



Normanskill shale, Kenwood, N. Y. 



Genus leptograptus Lapworth 

 Leptograptus annectans (Walcott) 



Page 264 



5 Typical specimens from type locality (topotypes). Too wide in 



reproduction 

 Utica shale, Holland Patent, N. Y. 



Leptograptus flaccidus (Hall) mut. trentonensis nov. 



Page 261 



6 Narrow specimen 



Normanskill shale, Stockport, N. Y. 



7 Group of typical specimens (cotypes) 



Normanskill shale, Mt Moreno near Hudson, N. Y. 



