72 



University of California Publications in Geology [Vol. 10 



marine labyrinthodonts, 22 and in western North America are found 

 thalattosaurians 8 ' 11 to which one nowhere has found any analogy. 



Lastly, I would like to draw attention to a hitherto utterly neg- 

 lected region containing marine Triassic saurians, namely, Arctic 

 North America, where we have long known that ichthyosaurians are 

 to be found. Triassic beds lie exposed on Prince Patrick Island, 

 Parry Islands, and on the western side of Ellesmere Land. One or 

 more of these islands could, no doubt, be reached by ship, at least 

 during favorable years, and from the eastern parts collections could 

 be freighted down on sledges across Ellesmere Land, to the eastern 

 shore of which one can come with ships by Smith Sound. How 

 accessible the occurrences on either side of the northern part of Smith 

 Sound are I do not know. 



Transmitted February 25, 1916. 



