REPORT ON THE DEEP-SEA FISHES. 285 



Tlie following table shows how these various kinds of phosphorescent organs are 

 distributed in the species examined by me : — 



III. SPECIAL DESCRIPTION OF THE DIFFERENT KINDS OF PHOS- 

 PHORESCENT ORGANS. 



A. Regular Ocellar Organs. 



1. Simple ocellar organs without pigment coat, simk in the body. 



a. Distribution. 



These organs have hitherto only been found in one species, Opostomias micripnus ; 

 and have not been observed by previous authors. In Op)ostomias micripnus they appear 

 as very small white spots scattered very abundantly on the sides and back of the 

 otherwise dark-coloured fish, and when magnified present the appearance of circular 

 patches from O'l to 0-3 mm. in diameter. They are not uniformly scattered over the 

 back of the fish, but appear in groups of from fifty to one hundred, and these groui)s 



