iv Table of Contents 



No. 77. Williamson, E. B. — Results of the University of Michigan- 

 Williamson Expedition to Colombia, 19 16-19 17. ^- Notes on a Few 

 Species of Progomphus (Odonata). (17 pages, 3 plates.) 



No. 78. Hinkley, Anson A. — A New Species of Goniobasis. (3 pages.) 



No. 79. Winslow, Mina. — Note on Oreohelix idaJtoensis baileyi Bartsch. 

 (3 pages, I plate.) 



No. 80. Williamson, E. B. — A New Gomphine Genus from British Guiana 

 with a Note on the Classification of the Subfamily (Order Odonata). 

 (11 pages, I plate.) 



No. 81, Blanchard, Frank N. — Three New Snakes of the Genus Lampro- 

 peltis. (10 pages, 2 tables, i plate.) 



No. 82. Case, E. C. — On a Very Perfect Thoracic Shield of a Large Laby- 

 rinthodont in the Geological Collection of the University of ^Michigan. 

 (3 pages, I plate.) 



No. 83. Lamont, Marion Elizabeth. — A New Species of Clinostomum. 

 is pages, I plate.) 



No. 84. Gaige, Helen Thompson. — Observations upon the Habits of Ascaphus 

 triiei Stejneger. (9 pages, i plate.) 



No. 85. Dice, Lee Raymond. — The Land Vertebrate Associations of Interior 

 Alaska. (24 pages, 4 plates.) 



No. 86. Dice, Lee Rajmond. — The Mammals of Warren Woods, Berrien 

 Coimty, Michigan. (20 pages, 2 plates.) 



No. 87. Blanchard, Frank N. — A Synopsis of the King Snakes: Genus 

 Lampropeltis Fitzinger. (7 pages, i table.) 



No. 88. Hubbs, Carl L. — Notes on the Atherine Fishes of Colombia. 

 (6 pages.) 



No. 89. Hankinson, T. L. — Report on Investigations of the Fish of the 

 Galien River, Berrien County, Michigan. (14 pages, 5 plates.) 



No. 90. Hubbs, Carl L. — A Note on the Sj-nonomy of the Cichlid Fish of 

 Cuba and Barbadoes, Ckhlasoma tetr acanthus. (5 pages.) 



