C. Schuchert — Notes on Arctic Paleozoic Fossils. 475 



" Similar Silurian limestones constitute the island of Corn- 

 wallis, to the westward of North Devon " (220-221). 



The following fossils were gathered by Low on Beechey 

 Island in 1904 and again by McMillan on the expedition of 

 1908-1909. It was on Beechey Island, it will be remembered, 

 that Franklin and the crews of the " Erebus " and u Terror " 

 came to their sad end. From dark-colored, thin-bedded lime- 

 stones replete with fossils but in no great variety were found 

 the fossils listed below. This- is the widely distributed Lissa- 

 trypa phoca fauna and may be, as noted by Holtedahl, some- 

 what younger than the Ellesmereland fauna noted beyond. 

 (For other details see Ami in Low 1906 : 329, and Lambe in 

 Bernier 1910 : 479.) 



" Strephodes pickthornii " (Salter). This common cup coral 

 looks to the writer more like Zaphrentis roemeri Edwards 

 and Haime. 



Favosites cf. helderbergice prwcedens Schuchert. Small hemi- 

 spheric masses. Has been erroneously labeled F. gothland- 

 icus. 



JBoreaster lowi Lambe. A Favosites-ttke coral with septa as 

 in Calapoecia. Described in Low 1906 : 323. 



Acervularia austini (Salter). Very common and in colonies 

 of up to 10 inches across. They are found in the lowest 50 

 feet of the limestones following the basal shale series. A 

 very similar species occurs rarely in the basal Devonian lime- 

 stones of New York and Maryland. 



Atrypa phoca (Salter). Common. A smooth atrypoid to be 

 placed in Lissatrypa, a new genus to be defined by Twen- 

 hofel, and based on a much older species found on Anticosti 

 Island. L. phoca and Acervularia avstini are the guide 

 fossils to the basal Devonian strata of North Devon. 



Meristella, sp. undet. A small species that is exceedingly 

 common and erroneously labeled by Ami as Atrypa phoca. 



Hormotoma and Holopea. Small forms that remind much of 

 those found in the Manlius of New York. 



Leperditia, sp. undet. A large form up to 0*5 inch in width. 

 It may be identical with L. elongata Weller, found in the 

 Rondout of New Jersey and Keyser of Maryland. 



This horizon is in the Lower Devonian and of about the 

 time of the Keyser of the Maryland section (see Lower Devon- 

 ian volume of the Maryland Survey, 1913). The writer could 

 not have made out this correlation if he had not had the 

 advantage of studying another collection made further north 

 by Per Schei of the Sverdrup expedition of 1901-1902. This 

 material has just been described by Doctor Olaf Holtedahl of 

 the University of Kristiania, Norway, where the Per Schei 

 collections are kept, in a work noted beyond. Ami in Low's 

 report has listed a fauna of thirty-five species. 



