Clarke — Oneonta, Ithaca and Portage Groups, 



65 



Hyoliihes (id is (cc). 

 Ch (metes lepida (c). 

 Stroplialosia t/runcatd. 

 Liorh ynch us mesacostalis. 

 Chonetes scitula. 

 Productt lla spin ulicosta. 

 Pli olidops Ham iltonice. 

 Lingula Ugea, var. (Hall). 



Liuitdieardium or Panenka, fragment of a large species. 

 Abdominal segment of Eehinocaris. 

 Orihoceras sp. 



At the top of these beds Hyoliihes again appears in considerable abun- 

 dance, associated with numerous specimens of Lingula Ugea, var. (Hall) and 



Spirifer mucronatus var. posterns. 

 Idorhynch us mesat 'ostal is. 

 Chonetes scitula. 

 67/. defleota. 



Nuculites, very short form, cf. Nyssa. 

 Twenty-five feet above are ten feet of darkish shales, with 

 •• Produetella spimilicosta. 

 Strop 1) ahsia trim at ta. 

 Liopteria kevis. 

 Nuculites cf. Nyssa. 



III 1 . This substation is ten fest above the last horizon, the rocks 

 heavy bedded argillaceous sandstones which have been quarried for the 

 purpose of building a catch-basin on the creek near by. 



The fauna is highly characteristic and is almost wholly constituted of 

 typical species of the Hamilton group with the remarkable addition of 

 Jjptd'iid rhoinl>oi<hdis, a species which has not been known to occur in New 

 York above the Corniferous limestone, though it reappears after the close of 

 the Devonian in the YVaverly sandstones of Ohio. 



The species obtained are the following : 



Leptwn a rh om ho ida 1 is. 



1'ltaeops rana (c). 



Spirifer mucronatus, indistinguishable from the short-winged Hamilton 

 species (c). 



Chonetes scitula, large form approaching Ch. dejlecta (cc). 



Cyrtina sp. now, large, with smooth exterior and great median septum (c). 



