Lepidasterina gracilis nov. 



Page 43 



i Small specimen (holotype), showing six rays preserved and 

 bases of two more. Abactinal view. Natural size. 



2 Larger specimen, with eight rays (paratype). Natural size. 



3 Oral armature and abactinal view of base of ray. Row of radials 



and the supramarginals shown as impressions, x 5. 



4 Interior mold of actinal (ventral) view of ray, the ambulacral 



groove closed, x 5. 

 Devonian : Lower Chemung beds at Avoca, Steuben county, 

 N. Y. 



Lepidasterella gyalum (Clarke) 



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5 .Portion of type specimen showing the weblike parts of disk 



between the bases of the rays. Natural size, from gutta- 

 percha squeeze. 

 Devonian : Portage beds near Ithaca, N. Y. 



Lepidasterella babcocki Schuchert 



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6 Portion of specimen drawn to show the median row of radials 



and the adjoining series of supramarginal columns in the 

 rays, as well as the weblike expansions of the disk and the 

 marginal columns of plates in the disk. Natural size. 



7 Further enlargement (x 3) of a disk segment to show more 



clearly the marginal plates of the disk. 

 Devonian: Portage beds (Cashaqua shale) at Interlaken, N. Y. 

 The originals of the figures are in the New York State Museum. 



