38 NEW YORK STATE MUSEUM 



Glossograptus quadrimucronatus (Hall) C. typicalis Hall 

 var. C. putillus (Hall) 



Climacograptus bicornis Hall 



This occurrence indicates the continuation of the Utica shale belt of 

 the Hudson river valley into New Jersey, although the presence of the 

 Utica shale fauna has not yet been recorded from the " Hudson River slate" 

 of that State. Collections made in Pennsylvania by Dr Ulrich, which I 

 have had occasion to see, leave no doubt of the farther extension of the 

 Utica shale into that part of the Appalachian trough. 



The extensive Utica shale exposures of the Lake Champlain region 

 are, as Professor Perkins correctly remarks, singularly barren in fossils and 

 especially in graptolites. The long continuous exposures of Grand isle 

 yielded to the present writer only a few specimens of Climacograptus 

 typicalis. 1 On the New York side of the lake only a few small patches 

 of Utica shale remain, the most notable of which are those near Addison 

 Junction and Rouse Point. 



In Canada the faunas of the various localities have been carefully 

 listed by Ami in his paper on the Utica Terrane in Canada [1892]. 

 Glossograptus quadrimucronatus, G. ? eucharis and 

 Leptograptus flaccidus appear in nearly all of the lists ; besides 

 Mastigograptus simplex, Climacograptus bicornis ?, C. 

 scharenbergi ?, C. sp. and Diplograptus pristis. We 

 have had occasion to observe the presence of both Climacograptus 

 typicalis and C. putillus in Canadian Utica shale and since Ami 

 comments on the difficulty of determining the Climacograpti \ibid. p. 16], it 

 is quite obvious that his tentative identifications refer to these two species 

 which, at that time being not yet described and known only from Hall's 

 enlargements of fragments of the rhabdosome, were not easily recognized. 

 Mastigograptus tenuiramosus I have seen in Canadian specimens 

 sent me by Professor Whiteaves. 



'Professor Perkins [1904, p. 106] records Climacograptus bicornis and 

 Diplograptus pristis from the .Utica shale of Grand isle. 



