INDIANA PALEONTOLOGY. m. 



hill ^^even miles north of Burksville, on tlu* liurksville and Colnnibiii Hoad, Cnni- 

 berland county, Kentucky. Collection of Mr. G, K. Greene. 



M E T A B L A S T US N I T I I) V L U S , M. & G., Kowley . 



Plate 8(5. Fiu. 49. 



This little blastoid is elongate and narrowing but little toward the base 

 Avhere an end view is strongly triangular. 



The ambulacra are deeply sunken between the radial lips, very narrow and 

 less than one-third the length of the body. 



The deltoids are not visible on a side view. 



If this fossil were found at Boonville, Mo., it would be the young of J/. 

 too r the a i. 



Warsaw Limestone. Lanesville. Ind. Collection of G. K. Greene. 



CODASTFK ATTENUATUS, Lvon, Rowley. 



Plate 86. Figs. 50, 51. 



We give summit and side views, respectively, of a deformed specimen : one 

 ,in which the fifth ambulacrum is wanting. The ventral portion of the fossil is 

 not well preserved, the slit areas having been removed. 



Middle Devonian, Columbus, Ohio. 



N U C L E O C R I N U S V E R N E U I L I . Tr( )0st, Rowley . 



Platk 36. Fias. 5:2, 58, 54, 55, 56. 



Figure 5:2 is a summit view of a specimen showing the roof of ventral plates 

 whose surface is fineh* papulose. The relative position and relation of the spir- 

 acles and anal opening and the passage of the ambulacral grooves under the 

 ventral disk, as tunnels, are shown in the figure. 



Figure 53 is a side view of a smaller specimen in which the anal plate is 

 greatly produced beyond the normal shape of the body, especially near the sum- 

 mit. 



The specimen, also, has the mid ventral area covered by a low roof of small 

 papulose plates. 



Figure 54 is a side view of a specimen in which the covering of a ventral 

 surface is shown at "^/' the entrance of the ambulacral groove under the 



