u 



''oL. I. Nos. 3-4. 



BULLETIN 



FROM THE 



LABORATORIES OF NATURAL HISTORY 



State University of Iowa. 



/. SOME NEW SPECIES OF PAL.^OZOIC FOSSILS, 

 By S. Calvin. 



//. THE SAPROPHYTIC FUNGI OF EASTERN IOWA, 

 Continued, 

 By T. H. McBride. 



///. COMMON SPECIES OF EDIBLE FUNGI, 

 By T. H. McBride. 



IV. THE LCESS AND ITS FOSSILS, 

 By B. Shimek. 



V. A NEW SPECIES OF FRESH WATER MOLL US RT, 

 By B. Shimek. 



VI. THE PSELAPHID.M OF NORTH AMERICA, 



A Monograph, 

 By E. Brendei., M. D., and H. F. Wickham. 



PUBLISHED 



BY AUTHORITY OF THE REGENTS. 



IOWA CITY, IOWA. 

 June, 1890. 



