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Show 1895.] ON LAND-SHELLS FBOM BOENLO, ETC. 97 in 1886. They agree very closely. The difference is that in the case of Phyllomedusa the egg-masses are glued between leaves overhanging water, while in the case of Hyla nebulosa they are in the sheaths of old banana-leaves; this is of course of secondary importance. But this agreement, together with m y experiments above quoted, makes m e doubtful whether, even in the case of Phyllomedusa, the egg- masses are suspended from leaves in order to facilitate direct dropping of the larvae into the water below. Naturally that is the first idea which occurs to the observer. But how, then, to explain the result of the experiment made Math Hyla nebulosa ? Is it not rather the coolness and moisture which the' vicinity to water afford that are needed by the egg-masses than actual resort of the larvae to water ? Does not the pronounced dislike of the young Hyla nebulosa to remain in that element speak in favour of m y supposition ? 2. On a Collection of Land-Shells from Sarawak, British North Borneo, Palawan, and other neighbouring Islands. By E D G A B A. S M I T H. [Eeceived January 9, 1895.] (Plates II.-IV.) The species mentioned in this report form part of collections received principally from Mr. A. Everett during the last two years. As many as fifty out of the eighty-three enumerated appear to be undescribed, and form a very interesting addition to the known faunae of their respective localities. The majority were collected by Mr. Everett in various parts of Sarawak and British North Borneo, the others being obtained in some of the small islands off the coast and in the large island of Palawan. U p to the present time nearly two hundred species of land-shells have been described from Borneo, and forty additional species are characterized in the present paper. They are nearly all from different districts in Sarawak and the northern parts of the island, only a few having been collected by Mr. Carl Bock in the south-east. W h e n the rest of the island is explored it is probable that a very rich fauna will be discovered. The types of all the new species have been presented to the British Museum by Mr. Everett. In the most recent list of the fauna of Palawanl only thirty different species were enumerated. In a subsequent paper by the present writer2 six additional species were quoted, and twelve others are now added to the list, making a total of forty-eight species known from the island. I believe that all the eighteen species collected by M r . Everett were from the southern part of 1 Eev. A. H. Cooke, Proc. Zool. Soc. 1892, pp. 462-463. 2 Ann. Mag. Nat. Hist. 1893, vol. xi. pp. 347-353. PBOC. ZOOL. Soc-1895, No. VII. 7 |
