CONTENTS OF VOLUME IV. 



No. 1.— On Heredity in Certain Micro-organisms Marshall A. Barber. 



2. —Some Results of Desultory Collecting of Insects in Kansas 



and Colorado Elbert S. Tucker. 



3. —Invertebrate Paleontology of the Upper Permian Red Beds 



of Oklahoma and the Panhandle of Texas J.W. Beede. 



4. —Some Laboratory Methods in Embryology R. G. Hoskins. 



5.— A Method of Recording Embryological Material, 



Richard E. Scammon. 



6. —Some New Features in Uintacrinus H. T. Martin. 



7. —Cytology and Taxonomy C. E. McClung. 



8.— Bibliography, with Brief History, of the Department of Zool- 

 ogy, University of Kansas C. E. McClung. 



9.— Ichthyological Notes of the Kansas Cretaceous C. E. McClung. 



10. —Restoration of the Skeleton of Bison occidentalis . . C. E. McClung. 



, 11. —Spermatogenesis of Xiphidium fasciatum C. E. McClung. 



12. —The Chromosome Complex of Melanoplus bivitattus Say, 



Nadine Nowlin. 



13.— The Chromosome Complex of Syrbula admirabilis, 



W. R. B. Robertson. 



14. —Organization of the Chromosomes in Phrynotettix magnus, 



Edith Pinney. 



15. —Relationship of the Turtles and Plesiosaurs Roy L. Moodie. 



16.— Description of the Skull and Separate Cranial Bones of the 



Wolf-eel {Anarrhichthys ocellatus) L. A. Adams. 



17. —Anatomy of the Acrididaean Heart and its Histological Struc- 

 ture Lalia V. Walling. 



18. — Some Laboratory Methods in Embryology, II R. G. Hoskins. 



19. —Notes on Some Northern Arizona Birds Alex Wetmore. 



20. —South American Archeological Notes H. T. Martin. 



