HIPPOLYTE VABIANS. 



671 



Colour Experiment 3. 



caris pusiola trawled. The former were both greenish brown, the 

 left for two days in light and under strong current. Zostera. 



Slst, 

 10.35 p.m., 

 after light. 



Light blue 



green; not so 



perfectly 



blue to tips 



of body as 



last niglit 



Liglit blue ; 



transparent 



except at 



ends of body, 



which are 



brownish 



Unaltered 



Put in light 



August 1st, 



9.30 a.m., after 



lislit. 



1st, 

 10.30 p.m., 

 after liglit. 



Greenish yellow- 

 white stripe 



distinct ; semi- 

 transparent 



Clear greenish 

 yellow ; tail and 



ant. scales 



brownish, exact 



colour of lower 



part of Zostera; 



semi-transparent 



Unaltered 



Pat in liffht 



2nd, 

 7.45 a.m., 

 after dark. 



Very Trans- 



transpareu I parent pale 



light blue, 



very slight 



brownish 



tinge on 



ant. and 



hind 



Ditto 



Unaltered 



Putin 



dark; 



weeds, 



Zostera 



and 

 Entero- 

 morpha 



green ; 



behind 



hump faint 



brownish 



Trans- 

 parent 

 green ; ant, 

 and hind 

 brown 



Unaltered ; 

 still very 



trans- 

 parent, and 



only a 

 bluish tint 



on tail 



Put in 

 dark 



Snd, 10.10 a.m., 

 after dark. 



2ud. 



10.30 to 12, 



ill open. 



Slid, 

 7.15 p.m., 

 after light. 



Fairly trans- 

 parent bright 

 green 



Fairly trans- 

 parent dull 

 green, except 

 behind hump 

 brownish 



Unaltered 



10.30.— Taken 

 into the open, 

 sunny ; added 



Bryopsis; 

 temperature of 

 water 20-5° C. ; 

 small yellowish- 

 green Hippo- 

 lyte slipped in 

 with the weed 



