194 Nov. - Dec. 1854 Loo Choo occasion of no little exultation. To pass on to terrestrial collections: - the chief ground upon which these were sought for was a range of well cultivated level land lying along the line North of Sumi, and over- hung by a cliff of coral-rag, the base of which, as is seen by the usual unmistakeable signs, was once washed by the sea. Much of this land was terraced and portions of it ditched and banked off into paddy-fields, the waters being supplied by two or three springs which pushed out at the base of the cliffs. Here were found several species of Melaniae and other fresh-water shells, one of which will form a new genus resembling Kissia, were found. The paddy fields also yielded water snakes (Coluber) frogs, land crabs (Pecarcinus) Planaria and several insects. Land shells of half a dozen species were found on the thorn- berry and among piles of stones. Two of these (Helices) are common to Loo- Choo and to nearly all the Japane- se Islands and China. A small Trochus-