iv Table of Contents. 



Report on the Zoological Expedition to the Lower Sas- 

 katchewan, by C. C. Nutting, .... 235 



Observations on the Development of the Hypophysis 

 cerebri and Processus infundibuli in the Domestic 

 Cat, by F. S. Aby, 295 



Observations on a case of Leucaemia at the Iowa City 



Hospital, by F. S. Aby, 311 



Studies on the Male Tarsus in some Adephagous Cole- 

 optera, bv H. F. Wickham, 322 



Description of the Early Stages of several North Ameri- 

 can Coleoptera, by H. F. Wickham, . . . 330 



A Botanical Expedition to Nicaragua, by B. Shimek, 345 



The Nicaraguan Myxomycetes, by Thos. H. McBride, 377 



The Myomecetes of Eastern Iowa ( Continiied), by Thos. 



H. McBride, 384 



A new SHme- Mould from Colorado, by Thos. H. 



McBride, 390 



A new Cycad, by Thos. H. McBride, . . . 391 



Some Central American Pyrenomycetes, by Chas. L. 

 Smith, . . 394 



