REPORT OF THE STATE PALEONTOLOGIST 1902 867 



Genesee, occupied as a whole by the Naples fauna, was divisible 

 into two subprovinces, the eastern or Naples and the western or 

 Chautauqua. 



This memoir, it is hoped, will be printed during the current 

 year and will be accompanied by about 20 quarto plates of 

 illustration. 



Catalogue of type specimens of Paleozoic fossils. A year ago I 

 announced that the compilation of this catalogue had been com- 

 pleted and the printing begun. Printing has continued without 

 interruption during the past year, and at the date of writing 

 there are 650 pages completed. The work goes slowly, as it 

 is one requiring great accuracy of treatment, but I hope to 

 report the catalogue published before another year. With com- 

 plete entries of all the type specimens now in our possession, 

 the number of which constantly grows, the book will not fall far 

 below 1000 pages and will include considerably over 5000 en- 

 tries. Concurrent with the work of printing this catalogue, 

 the labeling and ticketing of the types has been carried forward 

 to correspond with the numbering in the catalogue itself. This 

 has involved bringing most of our type specimens together in 

 our rooms in the State Hall, though some part of them are left 

 in their places in the exhibition collection in Geological Hall, 

 because of the difficulty of replacing them with other specimens 

 without disturbing the arrangement there. The work of arrang- 

 ing the types has been largely in the hands of Mr Mattimore 

 and has been carried out with much care. 



The crustaceans from the Salina (Pittsford) shales in Monroe 

 county. In my first report I noted the fact that the museum had 

 by purchase come into the possession of a unique collection of 

 heretofore unknown fossils from a horizon at the base of the 

 Salina shales, also unknown till that time. This is a thin layer of 

 black shales made known by excavations in the Erie canal near 

 Pittsford in the year 1897. So distinctive is the character of this 

 formation and its fauna that we are distinguishing the layer by 

 the term Pittsford shale. Mr C. J. Sarle, of Rochester, was the 

 discoverer of the horizon and the fossils. When Mr Sarle's collec- 

 tion passed into the hands of the State, he was promised an oppor- 

 tunity to publish with us an account of the peculiar eurypterid 



