TYPE SPECIMENS OF PALEOZOIC FOSSILS 71 



GILBERTSOCRINUS Phillips 



Gilbertsocrinus spinigerus Hall (sp.) 

 TYPE Trematocrinus spinigerus Hall. i5th 

 annual report of the New York state cabinet of natural 

 history. 1862. p. 128. 



Hamilton shales Vincent N. Y. 



C. A. White and C. Van Deloo, coll. 1860 

 TYPE Gilbertsocrinus (Trematocrinus) 

 spinigerus Hall. New York state museum of nat- 

 ural history bulletin i. 1872. pi. i, fig. g. 1 



Hamilton shales Vincent N. Y. 



C. A. White and C. Van Deloo, coll. 1860 



ICHTHYOCRINUS Conrad 

 Ichthyocrinus subangularis Hall 



418 2f- Q HYPOTYPE Ichthyocrinus subangularis Hall. 



Transactions of the Albany institute. 1863. 4:7. 



Hall, nth annual report of the Indiana state geologist. 

 1882. pi. 15, fig. 12. 



Niagaran Waldron Ind. 



C. D. Walcott and C. Van Deloo, 1878 



419 A -^~^ HYPOTYPE Hall, nth annual report of the Indiana state 



geologist, pi. 15, fig. 13. 



Niagaran Waldron Ind. 



C. D. Walcott and C. Van Deloo, coll. 1878 



420 ^^f-^ HYPOTYPE Hall. 28th annual report of the New York 



state museum of natural history. 1879. pi. 16, fig. n, 12. 



Hall, nth annual report of the Indiana state geologist. 

 1882. pi. 16, fig. n, 12. 



Niagaran Waldron Ind. 



C. D. Walcott and C. Van Deloo, coll. 1878 



*In the journal of the Boston society of natural history for 1861 (art. 4, p. 261-325) Prof. Hall pub- 

 lished without Illustrations a paper entitled Descriptions of new species of Crinoidea from the 

 Carboniferous rocks of the Mississippi valley. Separate copies of this paper bound up with 7 photo- 

 graphic plates of crlnoids and explanatory matter were circulated in 1872. These plates were lettered 

 44 State mus. nat. hist. bull. 1" and consisted chiefly of figures of Carbonic crinoids, but carried a 

 number of Devonic species ; the latter not referred to in the text. 



