State Museum of Natural History. 



59 



By Purchase. 



H. T. Woodman, New York city: 

 Four specimens Acervularia davidsoni, E. & H., Hamilton Group, 

 Iowa. 



Four specimens Favosites hemisphericus, Troost, Hamilton Group, 

 Iowa. 



One specimen Favosites emmonsi, Rominger, Hamilton Group, Iowa. 

 One specimen Csenostroma incrustans, M. & H., Hamilton Group, 

 Iowa. 



One slab of Potsdam Sandstone (4 feet 9 inches x 3 feet 6 inches) with 

 Ripple marks, from Keeseville, N. Y. 

 Ward and Howell, Rochester, N. Y. : 

 One specimen Macropetalicthys Sullivanti. 

 One specimen Diplomystus altus. 

 One specimen Ammonite. 

 One specimen Pentacrinus, sp. ? 

 One specimen Fish-tail. Gen. ? sp. ? 

 One specimen Icthyosaurus. 

 One specimen Platystrophia biforata. 

 One specimen Spirifera acuminata. 

 Seven specimens Spirifera Orestes. 

 Four specimens Spirifera Littoni. 

 Five specimens Spirifera Oweni. 

 Seven specimens Spirifera euryteines. 

 Three specimens Rhynchonella nympha. 

 Two specimens Rhynchonella tula. 

 Three specimens Rhynchonella henrici. 

 Two specimens Trematis punctostriata. 

 One specimen Trematospira marginalis. 

 Two specimens Retzia haidingeri. 

 Three specimens Uncites gryphus. 

 Two specimens Stringocephalus burtini. 

 One specimen Productus giganteus. 

 Two specimens Dielasma bovidens. 

 Two specimens Camarophoria megaera. 

 Twenty-two specimens Dielasma elongata. 

 Six specimens Dielasma elongata var. complanata. 

 Sixty specimens Camarophoria Schlotheimi. 

 Forty specimens Koninckina Leonhardi. 

 Eight specimens Terebratula linguata. 

 Two specimens Triplesia ambigua. 



