4 PROCEEDINGS OF THE l^fATIONAL MUSEUM tol. 74 



Ba^al pieces five ; pentagonal ; as high as wide ; extending beneath to the 

 columnar perforation ; junction with the column slightly concave. 



Radial pieces five ; hexagonal ; four of equal size ; as high as wide ; one much 

 larger than the others, rising between the points of the basal pieces. 



Secondary radials (scapulae, Miller) five; irregularly pentagonal; nearly 

 equal in size, except the piece on the left of the anal pieces, which is nearly 

 twice as large as either of the others ; articulating facet of the arms uneven ; 

 perforated; sulcated upon the upper side; the pieces curve upward at their 

 line of junction, and terminate upon the summit above the line of the arms. 



Anal pieces two ; hexagonal ; one equaling in size the first radial pieces ; the 

 other is quite small. 



Arms five ; single ; structure beyond the first joint unknown ; they start from 

 the body in a horizontal direction. 



Column unknown. 



Geological position and locality. — Found in the limestone about 5 feet beneath 

 the Devonian black slate, and above the beds of Hydraulic cement stone, Jeffer- 

 son County, and in the same geological position on the falls of the Ohio. It 

 does not appear, from what is known of it, to have a very great vertical range, 

 probably not more than 3 or 4 feet. 



["EXPLANATION OF THE PLATES," PAGE 497] 



Vasocrinus valens Lyon 



Volume 3, page 485 



Fig. 3. Generic figure, size of nature, the pieces arranged around the columnar 



facet. 

 Fig. 3a. Profile view, Vasocrinus valens. 

 Fig. 86 (in error for 3&). Vasocrinus sculpt us, from which the external sculpture 



has been removed, anal side front, natural size. 



Vasocrinus sculptus Lyon 



Fig. 3c. Profile view, natural size, different specimen. 



Fig. 3d. Basal view of same specimen. 



Fig. 3e. Summit view of same specimen, natural size. 



Le;;vnd at bottom of Plate IV 



Fig. 3. Vasocrinus, Generic figure. 



Fig. 3o. Vasocrinus valens. 



Fig. 3&. V. sculptus different specimen basal view. 



Fig. 3c. V. sculptus profile view. 



Fig. 3(?. View of crown. 



Fig. 3e. Basal view. 



In regard to specimen 3a. Lyon says (p. 486) : '*It is very rare — 

 this specimen is the onl}^ one of this species heretofore obtained." 

 Lyon's figure shows this specimen in an inverted position and as 

 viewed probably from the anterior radius. As figured the cup ap- 

 pears to be perfect, and so would one judge from the description. As 

 a matter of fact the specimen is a weathered dorsal cup, well pre- 

 served so far as it goes, but lacking two radials and the entire 



