FINDING INDEX 



707 



Worms, parasitic, 544, 545, 



546, 547 

 Wrangelsburg, 516 

 Wrasses — see Labridae 

 Wrassky — see Vrasski 

 Wilrttemberg, 52S 

 Wiirzburg, 535 

 " Wundernetze," 390 

 Wurzenegg, 540 

 Wyandotte Cave, 427 

 Wyoming, fauna, 430; palae- 

 ontology, 530, 535, 53S 



Xanthochroism, 394 



Xanthosis leuciscorum, 548 



Xcnoberyces, 590 



Xenocara, 37S 



Xenomystus, 379, 513 



Xiphias, 366, 653; an- 

 atomy, 369: embryology, 

 415; eye, 41S; skin, 509; 

 cranial ner\'es, 525; ova 

 and lari-se,572; attack of, 

 574; gills, oSo; fisheries, 

 653 



Xiphiidffi, 652, 653 



Xiphophorus, in aquaria, 

 377; color, 392; hybrid 

 of, 506; viviparity, 582 



Xiphoramphus, 377 



Yaku I., 438 



Yale Univ., Triassio Coll., 



519 

 Yang-tze-Kiang R., 436, 



564 

 Yare R., 442 

 Yarmouth, 481 

 Yawning, 5S4 

 Ybbs R., 439 

 " Year-olass," 406 

 " Yellow fins," 629 

 Yellow Perch — see Perca 

 Yellowstone Park, 430 

 Yenisei R., 438 

 Yeniseisk, 480 

 Yokohama, 437 

 Yolk-sac, 383, 389, 410, 



412, 413, 52S, 529, 588; 



yolk-sac disease, 549 ; 



yolk-sac placenta, 581 — 



see also Embryology 

 Ypresian stage, 539 

 Ystad, 452 

 Yucatan, 432, 580 

 Yukon, 425 



Zagreb, 517 

 Zambesi R., 423 

 Zanzibar I., 423 

 Zeidse, 590 



Zell, 536 

 Zeomorphi, 025 

 Zeorhombi, anatomy, 369; 

 habits, 499; ova and 

 larvae, 572; taxonomy, 

 653 

 Zeugopterus, 657; burrowing 

 habit, 500; eggs and 

 larvae, 654 

 Zeus, 402, 609, 653; ova and 



larvae, 571, 572 

 Zoarces, scales, 402; breed- 

 ing experiments, 505 ; 

 reproduction, 582, 609; 

 double monstrosities, 

 605 ; pronephros, 609 

 Zoarcidse, 582; taxonomy 



and distribution, 660 

 Zoogeography, 404 

 Zoological Record, new 

 genera and species in, 600 

 Zurich, 467 

 Ziirich, Lake, 548 

 Zugersee, 453, 487 

 Zuni R., 425 

 Zuyder Zee, 449, 470 

 Zygcena — see Sphyrna 

 Zygonectes, in aquaria, 377; 



viviparity, 582 

 Zymogen, 403 



