VI 
LIST OP ILLUSTRATIONS. 
LIST OF ILLUSTRATIONS— Continued. 
Plate 
XIV. Grouped Pearls consisting of several originallyHistinct Pearls joined together at a later stage by a connecting 
deposit of Nacre 
XV. (1) Wisconsin pearls. Pink, copper-colored, and brown; (2) Twisted and Reniforin Pearly Growths, some 
showing Grouping or Coalescence 
XVI. Twisted, Elongated, and otherwise Irregular Pearls 
XVII. Irregular Baroque Pearls 
XVIII. Large Baroque Pearls ; Irregular Nacreous Growths, with more or less Beauty of Luster and Color 
XIX. Baroque Pearls 
XX. Hinge Pearls 
XXI. Irregular and Twisted Pearls 
XXII. Reverse of Plate XXI 
Page. 
426 
426 
426 
426 
426 
426 
FIGURES IN TEXT. 
Chasmistes stomias Gilbert, new species 5 
Leuciscus bicolor (Girard ) 7 
Jlulilus bicolor (Girard) 8 
Cottus lelamathensis Gilbert, new species 10 
Cottus evermanni Gilbert, new species 11 
Cottus princeps Gilbert, new species 12 
Temperature Reference Table 18 
Catostomus tsiltcoosensis Evermann Sc Meek, new 
species 69 
Catostomus occidentalis Ayres 69 
Chasmistes copei Evermann & Meek, new species 71 
Leuciscus siuslawi Evermann Sc Meek, now species. . . 72 
Agosia klamathensis Evermann & Meek, new species. . 75 
Vranidea tenuis Evermann & Meek, new species 83 
Choetodon bricei H. M. Smith, new species 103 
Figures of Salmon Weirs 117, 118, 119 
Mouth of Lake Lamprey 211 
Diagram of Weir for catching Lampreys as they run 
upstream to spawn 214 
Water Telescope in Use 402 
