CONTENTS OF VOLUME II. 



No. 1.— On Monoids, John N. Van der Vries. 



2. — Dipterological Contributions, C. F. Adams. 



3. — An Ecological Catalogue of the Crayfishes belonging to 



the Genus Cambarus, J. Arthur Harris. 



4. — Lists of Coleoptera and Lepidoptera Collected in Hamil- 

 ton, Morton and Clark Counties, Kansas, in 1902 and 

 1903, F. H. Snow. 



r _\^ Preliminary List of the Diptera of Kansas, .... F. IT. Snow. 

 ( Descriptions of Six New Species, C. F. Adams. 



6. — Thermal Diagrams and their Practical Use, .... Hugo Diemer. 



7. — Some City Water Supplies, E. H. S. Bailey and Edward Bartow. 



8. — Some Molecular Weight Determinations, .... Herbert A. Clark. 



9. — On the Mouth-parts on the Hemiptera, Walter J. Meek. 



10.— The Vitelline Body in Spider Eggs, Nadine Nowlin. 



11. — The Functions of the Nervous System, with Special Re- 

 gard to Respiration, in Acrididse, Henry Z. Eiving. 



12. — Lists of Coleoptera, Lepidoptera, Diptera and Hemiptera 

 Collected in Arizona by the Entomological Expedi- 

 tions of the University of Kansas in 1902 and 1903, F. H. Snow. 



13. — Snakes of Kansas, Edwin B. Branson. 



14. — Notes on and Descriptions of North American Diptera, C. F. Adams. 



15. — Coal Measure Faunal Studies, III. — Lower Coal Meas- 

 ures, J. W. Beede and Austin F. Rogers. 



