LIST OF ILLUSTEATIONS. 



Fishes of Streams Flowing into San Francisco Bay: Facing page. 



Plate I. Map of San Francisco Bay ani tributary streams 338 



Gas Disease in Fishes: 



Plate I. (1) A dead king-fish with external lesions. (2) Gill filament of a fish showing gas 



emboli in the lumina 376 



II. (1) Young puffers with gas disease inflation. (2) Rainbow trout fry showing dis- 

 tention of abdomen with gas 376 



III. Living scup with pop-eye -• 376 



A Revision of the Cave Fishes ok North America: 



Plate I. (1-3) Tactile ridges of Amblyopsis spelEeus. (4,5) Head of Typhlichthys subterra- 



neus, showing tactile ridges 394 



II. (1-3) Tactile ridges of Chologaster papilliferus. (4-0) Trogliohthys ros?e 394 



III. Heads of Chologaster agassizii, C. papilliferus, Typhlichthys subterraneus, Trog- 



lichthys rosse, and Amblyopsis spelseus, showing eye 394 



IV. (1) Troglichthys roste. (2) Chologaster papilliferus 394 



V. (1) Typhlichthys subterraneus. (2) Chologaster agassizii 394 



VI. Amblyopsis spelffius 394 



Life History of the Blue Crab (Callinectes sapidus): 



Plate I. (1) The cast shell of a half-grown male. (2) The ventral surface of a full-grown 



male "114 



II. (3) Ventral surface of a virgin female. (4) Ventral surface of an ovigerous fe- 

 male 414 



III. (5-7) Three successive stages in the moiling of one individual of Callinectes sapi- 



dus 414 



IV. (8,9) Further stages in the molting of Callinectes sapidus 414 



The German Carp in the United States: 



Plate I. (1) Scale carp. (2) Mirror carp. (3) Leather carp 525 



II. (1) Carp fishing. (2) Seining carp from pound. (3) Seine boat and live-car. (4) Pre- 

 paring carp for smoking 012 



III. (1) Dam and engine house of a carp pond. (2) Outer side of dam, showing engine 

 house and elevator in operation. (3) Supplementary engine and elevator. (4) 



Carp in pond coming up to inflowing stream of fresh water 628 



TEXT CUTS. 



Distribution of Sewage in Narragansett Bay: Page. 



ISIap of Narragansett Bay and adjacent waters 199 



Map of Providence River and Narragansett Bay, showing location of leased oyster ground. . 203 



A Revision of the Cave Fishes of North America: 



Alimentary canal of Chologaster cornutus SSI 



Alimentary canal of Chologaster papilliferus 3S1 



Alimentary canal of Chologaster agassizii 381 



Alimentary canal of Typhlichthys subterraneus 381 



Alimentary canal of Typhlichthys subterraneus, .showing gall sac 382 



Alimentary canal of Amblyopsis spelsens 382 



Alimentary canal of Amblyopsis spelaeus 382 



Internal anatomy of Amblyopsis speteus 383 



Alimentary canal of Troglichthys rosfe 383 



Diagram indicating probable phylogeny of the Amblyopsidse 384 



Chologaster cornutus 386 



Life History of the Blue Crab (Callinectes sapidus): 



Zoea form of Callinectes sapidus or some closely related crab 407 



Megalops form of Callinectes sapidus or some closely related crab 408 



The German Carp in the United States: 



Carp spawning 576 



Carp spawning 576 



Diagrammatic plan of a carp pond G28 



Diagrammatic plan of a carp pond 629 



V 



