﻿Explanation of Plate XL 

 (Pen and ink camera-lucida drawings by J. C. McConnell.) 



Figs. 1-3. Tetracystis chrysalis n. sp p. 218 



(See also Plate XXXIV, figures 9, 10.) 

 Fig. 1. Portion of an ambulacrum; the transverse markings in the 

 ambulacral groove indicate the position of the ambulacralia, 

 but not the plates themselves. About X 5- 

 Fig. 2. The anal pyramid and the boundary thecal plates 13, 14, 7, 8. 



About X5- 

 Fig. 3. Deltoid 23, with the madreporite and hydropore. About X 5- 



Figs. 4, 5. Ano>nalocystitcs cornutus Hall p. 206 



(See also text-figures.) 

 Fig. 4. The complete stalk. Somewhat less than X 3- 

 Fig. 5. One of the free arms seen from the adambulacral side. About 



X5- 



Coeymans limestone, Litchfield, Herkimer county, New York. 



Figs. 6-8. Camarocrinus ulrichi Schuchert p. 271 



(See also Plates XLI-XLIII.) 

 Fig. 6. The plates of the bulb, as seen on the top or rounded side of a 



small specimen. About X 5- 

 Fig. 7. More convex plates in another specimen in the same position 



as fig. 6. About X 5- 

 Fig. 8. Similar plates in a small specimen, indicating the beginning 

 of stellation. About X 5- 

 Helderbergian, 3 miles northeast of Daugherty, Indian Ter- 

 ritory. 



Fig. 9. Camarocrinus ulrichi stellifer n. var p. 271 



(See also Plate XLI, figure 6.) 

 Fig. 9. The stellate surface of this variety, also showing the slit-like 

 openings through the test. About X 5- 35>o86. 

 Helderbergian, S. W. x /\ sec. 15, T.2S., R.2E., Tishomingo 

 quadrangle, Indian Territory. 



Fig. 10. Camarocrinus saifordi Hall p. 270 



Fig. 10. The surface on the rounded end of a large bulb. About X 5- 

 27,760. 

 Helderbergian, Allen's Mills on the Birdsong, Benton county. 

 Tennessee. 



