36 Proceedings of the Royal Physical Society. 
Enhydra of Fleming (Philosophy of Zoology), in having the 
first premolar suppressed above, but that the latter has also 
the first premolar suppressed below. It has, however, six 
incissors in the under jaw, while the sea otter, Enhydra, has 
only four in the adult state." " It would appear to form an 
intermediate link between the true otter and the sea otter." 
Mr Murray accordingly proposed the generic name of Ana- 
hyster (belonging to an estuary). Anahyster (Nov. genus of 
otters) Calabaricus, Murr. 
Whether or not this small specimen is the young of the 
animal described by Mr Murray, I cannot of course de- 
termine. Unfortunately its imperfect dentition renders it 
impossible to decide ; and we are also at a loss as to whether 
the four incissors of the under jaw are the permanent num- 
ber, or, from its youth, are simply incomplete. The general 
characters of this young animal, in the feet and other re- 
spects, seem to correspond with those of the restricted genus 
Lutra of authors, more than with the genus Enhydra. The 
arrangement of the colours of its skin appears to be pe- 
culiar, but may possibly be simply dependent on its youth. 
It apparently does not resemble its nailless neighbour, the 
A onyx Delalandi of Lesson, which, according to him, also 
lives on fish and crustaceans, from the salt lakes of the 
sea-coasts near the Cape. I would be inclined, therefore, 
to use, provisionally, Mr Murray's name of Anahyster Cala- 
baricus, or simply that of Lutra Calabarica. Adult speci- 
mens of skins and crania, will, I trust, by and by be sent 
from Old Calabar, to enable us to settle the question of the 
generic or specific resemblance or difference of these otters. 
Its anatomical details I have not as yet been able to examine. 
Epizoa from the Otter. — Two small specimens of epizoa, 
which I exhibit, were detected on the skin of this young otter; 
I have not, however, been able at present to determine their 
species. 
Chrysalis of a Moth from Old Calabar. — I also exhibit 
another contribution from Old Calabar, a large black- 
coloured Chrysalis, apparently of a species of moth. It is oval 
in form, measures 2|- inches in length, and 2|- inches in cir- 
cumference at the thickest part, about the middle of its length. 
