BARLEEIA. 391 
Notwithstanding the proboscidal muzzle not being a strictly 
retractile one, I think the balance of characters is in favour of 
this animal being a transition-form from the Littorinide, and 
that it may be considered an aberrant Chemnitzia. 
I have stated above, that the pair of tentacula on each side 
are not formed by a scission of any part of the rostrum. I 
believe that I am in error, in consequence of the mimuteness 
and torpidity of my specimens. I think the J. globularis can 
scarcely be considered even a variety of the “opalina.” It 
will not surprise me if the three so-called species, J. dia- 
phana, J. opalina, and J. globularis, turn out to be identical, 
differing only through climate and habitat, and exhibiting the 
same phases as the variety of the Littorina rudis termed 
“ tenebrosa,” in its minute globular variations,—the “ neg- 
lecta” and “ fabalis” of authors. A rigorous examination 
of the peculiar internal aspect of the columella of the three 
so-called species, and the absolutely identical form of the 
operculum, even to the minutest portions of the sculpture, 
which certainly would not be the case if they were distinct, 
authorize me to express an opinion as decided as can be 
accorded to a shell inquisition, that the three are identical, 
and I cannot doubt that the animal of J. globularis will con- 
firm this view. 
BARLEEIA, nobis. 
For many of the reasons stated in the introduction to the 
Heterophrosynide, and for those in the subjomed account, we 
have transferred the Rissoa rubra of authors to this family, as 
a new additional genus. Though Barleeia, like Jeffreysia, has 
some Littorinidan attributes, we think that both these genera 
differ sufficiently from that group to require being arranged in 
a new family between the Littorinide and Pyramidellide, with 
both which the two genera have relations, as well as with 
each other ; and as some difference of opinion has existed with 
respect to the position of Jeffreysia, we have adopted for the 
family the significant title of Heterophrosynide. 
