654 p. W. GAMI3LL] AND F. W. KEEBLE, 



Ant. scales. Tlie blades or scales of tbe autenuse. 



£. s. Blue spots. 



Chrom. " Chromatopliores." 



Covered. Means tliat the vessel in question is protected by black cloth from 

 the light. 



D/ip. A current of water flowing through an experimental vessel. 



Ground. Short for ground colour. 



Rind. The posterior region of the body from the "hump" backwards. 



Z. 3. 3. Leitz's system, 3 ocular and 3 objective. 



^lid. The central region of the body from the stomach to the " hump." 



Noct. Nocturne. 



Ntwrk. Network produced by anastomosing branches of " chromatopliores." 



B. By reflected light. 



Recovery. Resumption of the diurnal colour after the nocturnal phase. 



T. By transmitted light. 



Transp. Transparent. 



Uncovered. Means that the vessel in question is left exposed to diffuse 

 li-ht. 



