INDIANA PALEONTOLOGY. 79. 



NUCLEOCRINUS VERNE UILI, Var. Pomum ( V) Etheridge <t Car- 

 penter. Rowley. 



Plate '26. Figs. 16-17. 



We refer doubtfullj figures 16 and 17 to this variety. The form is more 

 or less rotund and plump. The anal plate is outlined by strong sutures, but 

 ■not elevated above the general surface. The radial plates are l^ardly visible on 

 a side view in figure 16, being very short. 



Figure 17 is a well preserved, more or less globose specimen, but more con- 

 tracted at the base. The surface markings are rather peculiar as in the illus- 

 tration, looking somewhat like plate sutures along the middle of the interam- 

 bulacral areas. The transverse and longitudinal lines show beautifully under 

 the lens. The basal cavity is a triangular pit. but the sutures of the basal 

 plates are apparently obliterated. 



Locality, horizon and collection same as the last. 



N U C L E O C R I N U S V E R N E UI L I . Troost, Rowley. 



Plate 26, Figs. 9. 10. 11. 12. 13. U, 15. IS, 19, 20, 21-22. 

 Plate 27. Figs. 17. IS. 19. 20, 21. 22. 23. 



Figure 9, Plate 26. is an elongate form, hardly sulcate interambulacrally. 

 Base rather deeply concave, contracted. 



Ambulacra areas broad as in variety S>il/-at>'6-. Anal plate flat except near 

 the anal opening, where it is a little protuberant. Radial plates of the usual 

 proportional length. Basal plates hidden in the basal concavity, three and 

 «mall. Ornamentation as usual, cross and longitudinal lines. 



Fig. 10, plate 26, is an anal side view of a less elongate specimen with 

 scarcely any interambulacral sulcation. 



The Ventral covering of this specimen is beautifully preserved and pre- 

 sents the appearance of a five pointed star with the points toward the ambu- 

 lacra. 



The little plates themselves are covered with granular prominences. The 

 anal plate is hardly elevated above the surface. The ambulacra are rather 

 broad for VernevU't. 



Fig. 11, plate 26, is a side view of a specimen that is almost flat interam- 

 -bulaerally and elongate, narrow base and usual ornamentation. 



