Klasmura mirabilis nov. 



Page 64 



(See plates 20, 21, 23) 



1 Specimen retaining .ambulacral columns of one ray, some lateral 



spines and cast of oral aperture, x 5. 



2 Oral frame of other specimen, with patches of integument, x 5. 



3 Portion of abactinal side of ray, retaining the lateral wedge- 



shaped spines and the columns of dorsal plates, the side plates 

 being covered by integument, x 5. 



4 Another portion of abactinal side of ray, showing more in detail 



the shape of the dorsal plates, x 5. 



5 Portion of aCtinal side of ray, showing the ambulacral ossicles 



and lateral spines, x 5. 



6 Like view of another specimen, exhibiting a somewhat different 



shape of the ambulacrals, and their relation to the side plates, 

 as well as the connection of the lateral spine bases, x 5. ■ 



7 Portion of actinal side of ray, retaining the integument and 



showing the median row of slits and the lateral rows of circu- 

 lar pits or perforations which may mark podial pores or spine 

 bases, x 5. 



8 Portion of another actinal view of ray which in upper part 



exhibits the test with the median slits and in the lower the 



underlying plates, namely, the ambulacral plates and in the 



median line incomplete ventral plates, x 5. 

 Devonian : West Hill flags of Naples beds, Deyo Basin, near 



Naples, N. Y. 

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



The figures, with the exception of -figure 7, are taken from 

 ' gutta-percha squeezes. 



192 



