124 JOURNAL AND PROCEEDINGS 



developed species of this genus from so old a formation. Col. 

 Grant hopes to obtain additional remains. In the meantime the 

 well-preserved maxilliped or ectognath before us, with rounded, 

 scah^ bosal part and narrow maxillary procep with about twelve 

 denticles and three and a half inches in length, is sufl&cient to indi- 

 cate a large and new species which ma}' for the 'present be named 

 P. Canadetisis , which was the Canadian predecessor of P. A?iglictis. 



P.S.— In addition to about twenty-nine new graptolites de- 

 scribed by Dr. Spencer, Col. Grant has obtained since some seventy 

 more undescribed from the Niagara and Clinton beds, Hamilton. 

 Dr. Head, Chicago, has named two new genera (sponges) from 

 Hamilton, Ontario. His illness has unfortunatel}' prevented their 

 description yet, and later two additional ones, also unknown 

 hitherto, one of which he also discovered in Tennessee, but the 

 other — well marked and widely differing from this family group — 

 must remain for further investigation until his arrival, which is 

 expected soon. 



*NoTE — Extract mislaid some j^ears ago. 



