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Froceedings of the lioyal Society 
and by the posterior part of the foot likewise projected, and the 
dimple in the centre became less marked, though still present. 
Next day it had nearly completed two coils, and then, having 
diverged at an angle, left an interrupted row of ova in single file. 
So far as observed, their stomachs contained only cells and gra- 
nules. 
Doris aspera. — Under stones in pools near low-water mark ; not 
uncommon. 
Doris 'bilamellata. — Abundant all the year round ; occurring in 
swarms in March, and, according to Dr John Eeid, in February 
also. They manifest a tendency to congregate together in a vessel, 
and often crawl out of the w’ater. Their stomachs contain a grey- 
ish-brown mass of granules. 
Doris pilosa. — Common ; of all hues, and occasionally part}^- 
coloured. The same peculiar granular matter existed in the 
stomachs of this species, but with the addition of a greater number 
of larger granules and cell-like bodies ; there was also a tendency 
to form bolus masses. 
Of Doris suhquadrata, only a single specimen occurred. 
Goniodoris nodosa is a very common species, first found here 
by the late Eev. Dr Fleming, and afterwards by Dr John Eeid. 
There is little to be met with at St Andrews in support of 
the statement of the able authors of the Monograph” — in regard 
to the disappearance of the adult animal and the growth of the 
young ; for the varying sizes occur throughout the entire year, 
fine full-grown specimens (IJ inch) being found in December as 
well as in March, April, and May. They are hardy in confine- 
ment. 
Triopa claviger occurs now and then under stones, in situations 
seldom invaded by aught but the waves. The most striking fact 
in connection with this animal is the occurrence, in two out of 
three specimens, of crustacean parasites (Ergasili) similar in all 
respects to those found on the two first-mentioned species of 
Doris. 
One of the most remarkable amongst the Nudibranchs, and at 
the same time comparatively rare, is met with in considerable 
abundance, viz., jEgirus punctilucens. Belying its generic name, 
it frequents the under surfaces of stones in pools, from low water 
