CONTENTS 



Page. 



Preface, "i 



On Certain Recent, Quaternary, and New Fresh- Water Mollusca — R. 



Ells-woi th Call, i 



On Pyrgulopsis, a New Genus of Rissoid Mollusk, with Descriptions 



of two New Genera — R. Ellsworth Call and Harry A. Pilsbry, . 9 



A Defense of our Local Geology — IV. H. Barris, .... 15 



Volcanoes of the Sandv\ich Islands — C. S. Watkins, .... 23 



Harfordia, Greene and Parry — A New Genus of Eriogont;e from Lower 



California — C. C. Parry, ........ 26 



An Ancient Mine in Arkansas — Wm. A. Chapman, .... 29 



Description of a New Hydrobia, with Notes on Other Ris>oid;c — Harry 



A. Pilsbry, . 33 



Lastarri;va, Remy — Confirmation of the Genus, with Character Ex- 

 tended — C. C. Parry, ........ 35 



Mound Explorations at Toolesboro, Louisa County, Iowa — E. P. Lynch, 



H. C. Fulton, C. E. Harrison, C. II. Preston, .... 37 



Additional Explorations at Toolesboro — C. E. Harrison, IV. II. Pratt, 43 



Contributions to the Mollusca of Florida — Chas. T. Simpson, . . 45 



Memoranda on a Collection of Fishes from the Ozark Region of Mis- 

 souri — R. Ellsworth Call, ........ 73 



Iowa Thunder- Storms — Notes for the Summer of 1S87 — Frederick 



Starr, 81 



A Description of the Rockford Shales of Iowa — Clement L. Webster, 100 



Mound Explorations in North-western Iowa — Frederick Starr, . no 



Preliminary Annotated Catalogue of the Birds of Iowa — Charles R. 



Kcyes and H. S. Williams, . . . . . . . . 113 



The North American Genus Ceanothus, with an Enumerated List, and 

 Notes and Descriptions of Several Pacific Coast Species — C. C. 



Parry, 162 



Choi izanthe, R.Br. — Review of Certain Species Heretofore Improperly 

 Characterized or Wrongly Referred; with Two New Species — 



C. C. Parry, 174 



Memorial of Professor David S. Sheldon, LL. D. — C. C. Parry, . . 179 

 Ceanothus, L. — Recent Field Notes, etc. — C. C. Parry, . . . 185 



