tion : by Wilton Everett Britton. Part II. The Euplexoptera and 

 Orthoptera of Connecticut: by Benjamin Hovey Walden. 



17. Fourth Biennial Report of the Commissioners of the State 

 Geological and Natural History Survey, 1909-10. 



18. Triassic Fishes of Connecticut: by Charles Rochester 

 Eastman. 



19. Echinoderms of Connecticut: by Wesley Roscoe Coe. 



20. The Birds of Connecticut : by John Hall Sage and Louis 

 Bennett Bishop, assisted by Walter Parks Bliss. 



21. Fifth Biennial Report of the Commissioners of the State 

 Geological and Natural History Survey, 1911-1912. 



22. Guide to the Insects of Connecticut : prepared under the 

 direction of Wilton Everett Britton. Part III. The Hymen- 

 optera, or Wasp-like Insects, of Connecticut: by Henry Lorenz 

 Viereck, with the collaboration of Alexander Dyer MacGillivray, 

 Charles Thomas Brues, William Morton Wheeler, and Sievert 

 Allen Rohwer. 



23. Central Connecticut in the Geologic Past: by Joseph 

 Barrell. 



24. Triassic Life of the Connecticut Valley : by Richard 

 Swann Lull. 



25. Sixth Biennial Report of the Commissioners of the State 

 Geological and Natural History Survey, 1913-1914. 



26. The Arthrostraca of Connecticut: by Beverly Waugh 

 Kunkel. 



27. Seventh Biennial Report of the Commissioners of the State 

 Geological and Natural History Survey, 1915-1916. 



28. Eighth Biennial Report of the Commissioners of the State 

 Geological and Natural History Survey, 1917-1918. 



29. The Quaternary Geology of the New Haven Region, 

 Connecticut: by Freeman Ward, Ph.D. 



30. Drainage, Modification and Glaciation in the Danbury 

 Region, Connecticut: by Ruth Sawyer Harvey, Ph.D. 



31. Check List of the Insects of Connecticut: by Walton 

 Everett Britton, Ph.D. 



32. Ninth Biennial Report of the Commissioners of the State 

 Geological and Natural History Survey, 1919-1920. 



33. Geology of the Stonington Region, Connecticut: by. Laura 

 Hatch, Ph.D. (In press.) 



34. Guide to the Insects of Connecticut: prepared under the 

 direction of Wilton Everett Britton, Ph.D. Part IV. The 

 Hemiptera or Sucking Insects of Connecticut : by Wilton Everett 

 Britton, Ph.D., with the collaboration of James Francis Abbott, 

 Arthur Challen Baker, Harry Gardner Barber, William Thompson 

 Davis, D wight Moore Delong, William Delbert Funkhouser, Harry 

 Hazleton Knight, Asa Chandler Maxson, Herbert Osborn, Howard 

 Madison Parshley, Edith Marion Patch, Louis Agassiz Stearns, 

 Jose Rollin de la Torre-Bueno, Edward Payson Van Duzee, 

 Harley Frost Wilson. 



