Luminous Orc/ans of Selachian Fishes. 5G7 



without any interruption on the throiit at all. There are 

 no fewer than twelve to every scale, and in some places 

 they accumulate behind each scale in angle-sluiped groups. 





c 



Dorsally they scarcely reach to the lateral lino, which they 

 certainly do not cross. 



CentroscyUium granuhsum was first described by Dr. Giin- 

 ther. On the type specimen I fmind the luminous organs 



