NOTES ON NUDIBRANCHS. 
95 
The other two were black with white spots, tending to aggregate 
in larger spots, and white tips to the rhinophores. No coloured 
borders are mentioned or visible in the preserved specimens. 
Dr. Willey thought these specimens belonged to two species, but 
D'psis nigra is one of the most variable of nudibranchs, and I can 
find no differences except in colour. 
Doridopsis rubra (Kelaart). 
For the branchiae see Eliot, in Journ. Linnaean Soc. Zool., Vol. 
XXXI., 1908, pp. 118-9. 
Three specimens from Trincomalee. Length of largest 35 mm. 
According to the notes on the living animal, confirmed by the 
appearance of the preserved specimens, two were uniformly carmine 
coloured and the third blotched crimson, this effect being produced 
by the diffusion of red pigment in varying intensity over a neutral 
ground. In all the tips of the tentacles and the anal papilla were 
whitish. 
In two of the specimens the branchiae are normal. In one they 
seem hardly retractile. 
In the living animal the branchiae were infested by an ectoparasitic 
copepod, numerous specimens of which are preserved, some still 
hanging on the branchiae. When perfect it bears two or more egg 
sacks at the posterior end, but one or both have been knocked off in 
many specimens. 
p 
7(14)09 
