Corematocladus densa sp. nov. 



Page 205 



1 Specimen retaining the thick main branch. Natural size 



2 Another specimen (cotype) in which the stipe is either lost or 



covered by shale, but the corona of small branchlets is shown. 

 Natural size 



3 A young thallus with thin stipe, showing well the verticillate 



arrangement of the branchlets. Natural size 



4 Enlargement of a portion of the original of figure 1, to show 



the surface character of the stipe and the mode of division of 

 the branchlets 



5 Enlargement of a small fragment of the thallus showing the 



bases and the segmentation of the branchlets 

 Trenton limestone, Glens Falls, N. Y. 



Mastigograptus ? flaccidus sp. nov. 



Page 207 



I Type specimen (holotype). A graptolite that is associated with 

 the algae 



Trenton limestone, Glens Falls, N. Y. 



All originals are in the New State Museum 



2-16 



