BYNE: MARINE MOLLUSCA OF TEIGNMOUTH BAY. 165 
obviated by a¢ once cleaning out the animal of one shell 
with the thumb-nail before proceeding to remove another 
from the rock, instead of submitting them to a process of 
boiling at home. 
The colours may be still further heightened by rubbing the 
inside of the shell with a trace of Vaseline, all excess of grease 
being carefully removed by thorough cleaning with rag. 
P. vulgata var. athletica Bean.—Plentiful in rock pools. 
They only inhabit those which are always left full of water 
after the tide has gone down. ‘They are invariably covered 
with long tufts of seaweeds. 
P. vulgata var. coerulea L.—A few with the type. 
Fissurella graeca L.—Living examples trawled. This species 
was accidentally omitted from the former List. 
Trochus magus var. conica Marsh.—One or two with the 
type. 
Phasianella pullus var. oblonga Jeff—About fifty living 
examples were taken on one occasion on weeds. 
Littorina rudis var. jugosa Mont.—Common on stonework 
and buttresses. The higher parts were inhabited by great 
quantities of giant Zz¢forina nerttoides, which did not seem 
to associate with var. /ugosa. 
Rissoa semistriata var. pura Jeff.—Several alive from 
under stones occurring with the type. 
R. cingillus var. graphica Turt.—About eighty per cent. of 
the Teignmouth 2. cngr//us belong to this variety. 
Turritella communis Risso. var. soluta B.,D. & D.—This 
is the form referred to in the preface. It is described and 
excellently figured in ‘I.es mollusques marins du Rousillon’ 
fév. 1884, p. 226, figs. 9, 70. The authors state ‘Elle se 
distingue par les derniers tours tres convexes, comme 
détachés par une suture tres profonde. La conséquence 
de cette déformation est que ouverture est presque ronde 
et que la coquille parait ombiliquée.’ They also give 
