754 NEW YORK STATE MUSEUM 



PLATE 4 



Genus dendrograptus Hall 

 Dendrograptus ? succulentus sp. nov. 



Page 581 



1 Large rhabdosome 



2 Younger rhabdosome 



3 Fragment of rhabdosome showing long undivided branches 



4 Fragment of rhabdosome showing terminal tufts of fine branches 



Graptolite bed 7 of the Deep kill section 



Dendrograptus flexuosus Hall 



Page 579 



5 Young I'habdosome 



6 Young rhabdosome with closely arranged branches 



Graptolite bed 2 of the Deep kill section 



8 Young rhabdosome with basal disk or bulb. x2 



9 Greater enlargement of the same to show the thecal apertures. x7 



10 Fragment of rhabdosome, showing the thecae. x2 



Graptolite bed 3 of the Deep kill section 



Callograptus cf. diffusus Hall 



Page 686 



7 Fragment of young rhabdosome. x2 



Graptolite bed 2 of the Deep kill section 



Dendrograptus iluitans sp. nov. 



Page 582 



11 Rhabdosome. x2 



12 Further enlargement of branch of same. x7 



Graptolite bed 2 of the Deep kill section 



Genus ptilograptus Hall 

 Ptilograptus tenuissimus sp. nov. 



Page 691 



13 Rhabdosome. x2 



Graptolite bed 3 of the Deep kill section 



