PLATE X. 

 " OF CHIMERA COULIBI. 



These specimens were dredged off the Californian coast by the U. S. Fish Commission 

 steamer Albatross, in water of about 300 fathoms. Figures are of nearly natural size. 



Fig. 51. Newly hatched young. Length about 10 cm. This shows especially the great width of 

 the pectoral fin, the relatively large eye, and the lack of lateral coloration. 



Fig. 51 a. Dorsal aspect of foregoing specimen. Observe particularly the large size of the open- 

 ings of the auditory organ, au. 



Fig. 51 b. The ventral aspect of foregoing specimen. At y. s, is shown the scar, marking the 

 point of entrance of the yolk-sac. 



Fig. 52. Young of about 12.5 cm. This specimen shows a marked differentiation of the dorsal 

 fin, also noteworthy changes in coloration. 



Fig. 52 a. Dorsal aspect of foregoing specimen. 



Fig. 53. Young, 18.5 cm. in length. This exhibits an extreme degree of pigmentation. 



Fig. 53 a. Dorsal aspect of foregoing specimen. 



Fig. 53 b. Ventral aspect of foregoing specimen. 



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