CARCINOMA OR THE THYROID IN SALMONOID FISHES. 
389 
Diagram 17. — Fish 133, humpbaclf, length 14.4 cm.; type alveolar. 
Diagram 18. — Fish 139, Salmo hybrid, length 10.7 cm.; type alveolar. 
Diagram 19. — Fish 140, Salmo hybrid, length 8.7 cm.; type solid. 
Diagram 20.— Fish 151, S. foniinalis, length 22 cm.; type tubular. 
