44 NEW YORK STATE MUSEUM 



work as a whole is well advanced and as it covers a field of essen- 

 tially new knowledge in this State, may constitute a substantial con- 

 tribution to paleontologic science. During the past two seasons 

 quite extensive discoveries of crinoids have been made by Mr Lu- 

 ther in the Chemung shale of the town of Italy, Yates co., all of 

 which prove tO' be new and noteworthy additions to the crinoid 

 fauna of the rocks. The progress made in these studies is indicated 

 by the statement of the families represented and the species 

 recognized. 



Family CYAXHOCRINIDAE 



Arachnocrinus bulbosus Hall. Onondaga limestone 

 A. sp. nov. Onondaga limestone 

 A. sp. nov. Onondaga limestone 



Family oe^tsijdrocriniidae 



Cosmocrinus ornatissimus (Hall). Portage fauna 

 Maragnicrinus portlandicus {WhitUeld) . Portage fauna 



Family F»isocRiiNriDAE: (?) 

 Hypsocrinus fieldi Springer & Slocum. Hamilton shale 



Family cjvlceocrinidae^ 



Halysiocrinus secundus (Hall). Onondaga limestone 



Family f»IvATYcrinidaec 



Cordylocrinus plumosus (Hall). Coeymans limestone 

 C. plumosus var. parvus (Hall). Coeymans limestone 

 C. plumosus var. ramulosus (Hall). Coeymans limestone 

 Platycrinus eriensis Hall. Hamilton shale 



Family ]VE a.rsif»ocrinidae 



Marsipocrinus tentaculatus (Hall). Coeymans limestone 



Family hexacrinidae 



Hystricrinus eboraceus (Hall). Hamilton shales 

 H. sp. nov. Chemung fauna 

 H. sp. nov. Portage fauna 



CANIERATA 



Family jrhodocrinidae 



Acanthocrinus spinosus (Hall). Hamilton shale 

 Rhodocrinus nodulosus (Hall). Hamilton shale 

 Thylacocrinus gracilis (Hall). Hamilton shale 



