112 



Kansas Academy of Science. 



chelys hauii. The skull and mandibles are more robust than 

 the principal species, Cope's T. latirem,us, wider at the nasal 

 bones, and with round orbits, instead of oblong, as in latiremus. 

 The saggital crest is larger and sculptured. 



Tylosaurus dyspelor Cope. 



Another fine specimen discovered was a magnificent plate of 

 Crinoids, JJintacrinus socialis Marsh. This last one went, 

 through the efforts of Mr. Springer, to the National Museum. 

 It contains 150 fine calaces and covers an area of thirty square 

 feet. There is still another fine specimen that I have not seen, 

 but am assured is a complete skeleton, except the head, of 

 Platecarpus coryphaeus Cope. I shall be glad to show you 

 some of these specimens of the life of the Cretaceous, at my 

 laboratory, 617 Vermont street, Lawrence, Kan. 



I missed the exhilaration and joy of discovery, and longed to 

 find some excuse to take charge of my party, when I received 

 a letter from Dr. E. Koken, of the museum of the University of 

 Tubingen, Germany. He wrote me that he wished me to con- 

 duct an expedition to the Kansas Chalk for his museum, and 

 as he accepted by wire my terms, I have spent nearly three 

 months in his employ. We have enjoyed the most delightful 

 fall weather I have ever experienced in the fossil beds, and our 

 success has been remarkable. We discovered a very perfect 



