LIST OF ILLUSTRATIONS 

 IN THE TEXT 



FIG. PAGE 



HEAD OF SCHELLY ...... xviii 



1. SUCTORIAL Discs OF SEA LAMPREY AND LAMPERN . 4 



2. LARVAL LAMPREY, OR PRIDE, AND PLANER'S LAMPREY. 12 



3. PELVIC AND ANAL FINS OF A STURGEON . . 16 



4. PELVIC AND ANAL FINS OF A TROUT . . .22 

 5 CAUDAL FIN OF A TROUT . . . . -23 



6. HEAD OF ADULT FEMALE SALMON . . .29 



7. TAIL OF LARGE MALE SALMON . . . -39 



8. SEA-LOUSE AND GILL-MAGGOTS OF SALMON . . 48 



9. HEAD OF LARGE MALE TROUT . . . .56 



10. VOMERS OF TROUT AND CHAR . . . -74 



11. HEADS OF MALE AND FEMALE CHAR FROM BEN HOPE. 99 



12. HEAD OF SCHARFF'S CHAR . . . .107 



13. ANTERIOR BRANCHIAL ARCHES OF COLE'S CHAR AND 



COOMASAHARN CHAR . . . . . IO8 



14. HEAD OF COOMASAHARN CHAR . . . .108 



15. HEAD OF HOUTING . . . . . .125 



16. UPPER DENTITION OF SMELT AND TROUT . . 129 



17. ANTERIOR BRANCHIAL ARCHES OF ALLIS SHAD AND 



TWAITE SHAD . . . . . .132 



18. SCALE OF A SILVER EEL . , . . .163 



19. GUDGEON . . . . . . .181 



20. LOWER PHARYNGEALS OF RUDD AND ROACH . . 196 



21. BASS ........ 230 



22. THREE-SPINED STICKLEBACKS .... 242 



23. TEN-SPINED STICKLEBACK ..... 249 



24. DISTRIBUTION OF CARP FAMILY .... 265 



25. DISTRIBUTION OF PIKE FAMILY .... 266 



26. PLEISTOCENE GEOGRAPHY OF THE BRITISH ISLES . 273 



