36 Proceedings of the Boyal 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. 



Cheysalis 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 inches in length, and 2J inches in cir- 

 cumference at the thickest part, about the middle of its length. 



