' 
i 
i 
' 
Fig. 
Fig. 
Puate 4. 
Fig. 14-17. Bassozetus nasus Garman, 
14. The fish seen from the side, Drawing ; natural size. 
15. A radiating dise in transmitted light. Photograph; magnified 1: 58, n, main dise 
nerve; p, reticulation formed by the pigment cells with their long processes. 
16. A radiating disc in transmitted light. Photograph; magnified 1: 27. n, main dise 
nerve; p, reticulation formed by the pigment cells with their long processes. 
_17. Transverse section of a radiating dise. Stained: haematox jin. Drawing; mag- 
fe] “ 1 ae = 
nified 1:42. b, blood vessels; ¢, paratangentially arranged connective-tissue 
cells; n, main disc nerve; p, basal pigment cells. 
