I 



668 



F. W. GAMBLE AND F. W. KEEBLE. 



Table II. — Weed Coloue 



Flask B^ fine red and brown weed (after dark). Started Aug. 4th, 



Weed red, delicate 



Aug. 4th, 3.10 p.m. 



3.50p.m. 



Showed uocturnal tint. Was at once decapitated 

 by cutting off the head close behind eyes. Ant. and 

 hind brown; mid. transparent blue-green. Hand-lens, 

 ground colour light bluish green; numerous brown 

 chromatophores ; large " blue spots " with clear space 

 round each ; smaller blue spots without clear spaces. 

 Reacts violently to touch of tail (and occasionally spon- 

 taneously) for more than 5 minutes. In 5 minutes 

 loses transparency. Belly first to darken. In 10 

 minutes brown chrom. on the belly (which is now quite 

 brown) form under hand-lens reticular patchwork, 

 with occasional blue spots. Reacted to stimulation 

 tail after fifteen minutes 



Dorsal surface of mid. remains somewhat transparent 

 greenish 



The head cut off : young Hippolyte anchored on it, and 

 apparently ate some of it 



Rest as before 



Weed changed ; new specimen added ; left in diffuse 

 light 



c. As before 



d. Transparent, faint reddish 



? uniform dark brown-black 

 Chromat. not distinguishable 

 (hand-lens) ; no blue spots 

 9 dark brown white line; no 

 chromat. nor blue spots (with 

 lens) 



^ /. As before, 

 left uncovered 



Put back; 



