EOSSILS 303 



Specimens collected by W, C. Alden, from the same locality and identi- 

 fied by E. 0. Ulrich (1) are: 



Climacospongia near radiata Hinde, Niagaran. 



Ampleoeus sp. 



Favosites aff. F. asper D'Orbigney, Niagaran. 



From quite a large collection made at Devils Lake in 1916 by Lawrence 

 Martin, the jmiior author has identified those listed below:* 



Hindia spheroidalis Duncan, Silurian. 



Enterolasma cf. caliculuni (Hall), Silurian. 



Haly sites catenularia Linn. (Hall), Silurian. 



Favosites Msingeri Edwards and Haime, Silurian. 



Streptelasma cf. corniciiluin Hall, Ordovician. 



Cornulites sp. 



Fenestclla sp., upper Niagaran. 



Helopora sp., Silurian. 

 *Atrijpa reticularis Linn., Silurian. 



Hehertalla sp., Ordovician. 



Pentamerus cf. oblonyus (small) Sowerby, Silurian. 

 *Bhi/nchotrema capax- Conrad, Richmond. 



ScJiuchertella cf. subplana (Hall), Silurian. 



Pleurntomaria sp. 



Crinoid segments. 



Those marked thus * are well preserved and very little worn and can 

 not have been derived very far from where they were collected. 



The Summit and Tunnel Number 3 localities are listed together. Fos- 

 sils are qui,te abundant at each place. From these two localities the fol- 

 lowing have been identified : 



Cladopora sp., Silurian or Devonian. 



Favosites favosus (or a closely related species) Goldfuss, Silurian. 



Favosites cf. niagarensis Hall, Silurian. 



Halysites catenularia Linn., Siluriau. 



Lyellia cf. americana Edwards and Haime, Silurian.' 



Stromliodes mamillaris Owen, Silurian. 



Cystodictya sp., Silurian or Devonian. 



Eridotrypa sp., Silurian or Devonian. 



Fistulipora sp., Silurian or Devonian. 



Helopora sp., Silurian or Devonian. 



Pseudohornera sp., Silurian or Devonian. 



Pentamerus sp., Silurian. 



* For the identification of the bryozoa and sponges the writers are indebted to Dr. 

 R. S. Bassler. His statements relating to the pebbles sent him are as follows : "With 

 the specimens now being returned to you I have placed generic determinations and a 

 guess as to age. It seems to me that practically every one of the pelibles comes from 

 the Silurian of about Upper Niagara time, but it is possible that some of them are De- 

 vonian. At any rate, I have not seen an Ordovician species among them." 



