﻿WOOD] new and old middle devonic crinoids 8i 



GILBERTSOCRINUS INDIANENSIS Miller and Gurley 



1895. Miller and Gurley, 111. State Museum Nat. Hist., Bull. 6. p. 38, 

 pi. in, figs. h> _•_'. 



Formation ami locality. — Hamilton: Near Charlestown, Ind. 

 Cat. No. 1,231 M. I. T. 



VASOCRINUS Lyon 



1S57. Lyon, Geo]. Survey Kentucky, in, p. 485. 



VASOCRINUS SCULPTUS Lyon 

 [857. Lyon, Geol. Survey Kentucky, 111, p. 486, pi. iv, figs. 3&-<?. 



formation ami locality. — Onondaga(P): Louisville, Kentucky. 

 Cat. No. 36,011 (Rominger collection) U. S. N. M. 



TAXOCRINUS Phillips 

 [843. Phillips, Morris Cat. British Fossils, p. 90. . 



TAXOCRINUS LOBATUS (Hall) 



1862. Forbesiocrinus lobatus Hall, 15th Rep't N. Y. State Cab. Nat. 

 Hist., p. 1 -'4. 



Formation ami locality. — Hamilton : Thedford, Ontario. The type 

 locality is in Ontario county. New York. 

 Cat." No. 26.379 U. S. N. M. 



ARTHRACANTHA Williams 



1883. H. S. Williams, Proc. Amer. Philos. Soc. (April), p. 84. 



ARTHRACANTHA PUNCTOBRACHIATA Williams 

 (Plate XVI, 4) 

 1883. Williams, Proc. Amer. Philos. Soc. (April), pp. 83, 86. 



Among several fine specimens of ArtJiracantha punctobrachiata 

 from the Hamilton of Thedford, Ontario, there is one on which the 

 arms are exquisitely preserved. A figure of this specimen is intro- 

 duced to show the character of these structures which have not, so 

 far as known to the writer, been fully illustrated. The delicate 

 pinnules and the rectangular form of the upper portion of the arms 

 are especially to be noted. Other specimens show the spine bases 

 and the delicate, ribbed spines which closely resemble those of the- 

 Echinoidea. 



Cat. No. 26,380, 26.464-65 U. S. N. M. 



