TABLE OF CONTP:N'rS. 



PAGES 



Title-page and Table of Contents ..... i-iv 



List of Plates ......... v 



List of figures in text ....... vii-i.x 



Errata and Corrigenda ....... x 



Editorials 1-4, 233-236, 429-430, 469-472 



L Minute or Order 15ook of the \'irginia Court Held for 

 Ohio County, Virginia, at Black's Caljin (now West 

 Liberty, W. Va.), from January 6, 1777, until Sep- 

 tember 4, 1780. when its Jurisdiction over any Part 

 of Pennsylvania had Ceased. With Introduction 

 and Notes by Boyd Crumrine, Esc^. . . . 5-78 



IL The Tropidoleptus fauna at Canandaigua Lake, New 

 York, with the Ontogeny of Twenty Species. By 

 Percy E. Raymond ...... 79-177 



in. On two Species of Turtles from the Judith River P>eds of 



Montana. By O. P. Hay 178-182 



IV. A Preliminary List of the Hemiptera of Western Penn- 

 sylvania. By P. Modestus Wirtner, O.S.B. . . 183-232 

 V. The Records of Deeds for the District of West Augusta, 

 Virginia, for the Court held at Fort Dunmore (Pitts- 

 burg, Pa.), 1775-1776 ; Copied Consecutively as 

 Recorded by Boyd Crumrine, Esq. . . . 237-327 



VI. The Trilobites of the Chazy Limestone. By Percy E. . 



Raymond ........ 328-386 



VII. The Crawfishes of Western Pennsylvania. By Dr. A. E. 



Ortmann ........ 387-406 



VIII. Some Notes on the Geology of Southwestern Montana. By 



Earl Douglass ....... 407-428 



IX. .-V New Crocodile from the Jurassic of Wyoming By W. 



J. Holland 431-434 



X. Procambarus, a New Subgenus of the Genus Cambarus. 



By A. E. Ortmann. . . . . . . 435-442 



XL The Presentation of the Reproduction of Diplodocus Car- 



negiei to the Trustees of the British Museum . . 443-452 



XII. A List of the Birds Collected near Mombasa, British P^ast 



Africa, by William Doherty. By W. J. Holland . 453-463 

 iii 



