624 NEW YORK STATE MUSEUM 



The state museum record numbers attached to the species 

 named signify localities in these layers as follows: 



2429 Above Danlm's vineyard, West hill 



2430 Above Cleveland's, West hill 



2431 Above Freed's, West hill; 250 feet above Grimes sand- 

 stone 



2432 W r orden hill, South Bristol, 200-300 feet above Grimes 

 sandstone 



2433 Roadside near Charles Sutton's, West hill, Naples 



2434 West Italy, Yates county 



2435 Powell hill, 2J miles north of Naples; 250 feet above 

 Grimes sandstone 



Ambocoelia umbonata, 2430, 2431, 2432, 2433, Deyo basin 250 

 feet above Grimes sandstone 



Spirifer mucronatus var. posterns, 2431, 2433, Deyo basin 



S. mesastrialis, 2432 ' 



S. disjunctus, Deyo basin 



Stropheodonta cayuta, 2431, 2432 ' 



Schizophoria impressa, 2431 



Atrypa hystrix, 2431, 2432, Deyo basin 



Productella lachrymosa, 2432, Deyo basin 



Liorhynchus mesacostalis, 2433 



Grammysia elliptica, 2430, 2433 



Cimitaria corrugata, 2430 



Leptodesma robustum, 2431 



Palaeotrochus praecursor, 2432 



Hydriodictya cylix, Deyo basin 



Ceratodictya annulata, Deyo basin 



Hydnoceras tuberosum, 2434 



H. variabile, Deyo basin 



Arthracantha depressa, 2429, Deyo basin 



The flags and shales in which these brachiopodous faunules 

 are found are stratigraphically equivalent to that part of the 

 Gardeau flags and shales exposed on the Genesee river between 

 Wolf creek and the top of the upper Portage falls. Structurally 

 they differ very little from the undoubted Portage beds below, 

 or the equally unquestioned Chemung strata above them. 



