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Show 1889.] LAND-SHELLS F R O M BORNEO. 337 plain, the banding obsolete, and one is ornamented with a single dark narrow band on the periphery. Another box from Sarawak contains 13 specimens ; 2 are large, of the violet-tinted variety, the rest are small in size ; 8 have a greenish tint and finely banded olivaceous, 2 are quite white with violet apex, 1 has a single very broad dark band. From the Busan Hills 7 are similar to those from Sarawak, last mentioned, greenish tinted. Four came from Usukan; 2 are like var. B from Tiga Island, but smaller ; 2 are exactly like var. C of Issel (pi. vi. fig. 10). From Low Island, Mantanani group, the form differs most, having no raised spiral ribbing, rather large in size, delicate, thin, pale, transparent shells ; var. E of Issel. 9 a. LEPTOPOMA WALLACEI, Pfr. Compared with the example in the British Museum. This banded species occurs in Dr. Hungerford's collection. It is only a variety of L. sericatum, with a broad band above the periphery; other shells may be picked out with the band below it. 10. LEPTOPOMA UNDATUM, Metcalfe. Cyclostoma undatum, Metcalfe, P. Z. S. 1851, p. 71- Leptopoma undatum, Reeve, Conch. Icon. pi. iv. fig. 21 (1862). Hab. Sarawak (Everett). Leptopoma bourguignati, Issel. Leptopoma bourguignati, Issel, Moll. Born. Ann. Mus. Civ. Genova, p. 428, pi. vi. figs. 7, 8 (1874). Hab. Sarawak, 2 examples (Doria and Beccari). Leptopoma subconicum, Pfr. Leptopoma subconicum, Bock, P. Z. S. 1881, p. 634. Hab. Mindai (Carl Bock). Leptopoma massena, Less. Leptopoma massena, Bock, P. Z. S. 1881, p. 634. Hab. Mindai (Carl Bock). Leptopoma duplicatum, Pfr. Leptopoma duplicatum, Bock, P. Z. S. 1881, p. 634. Hab. Borneo (Carl Bock). Leptopoma whiteheadi, E. A. Smith. Leptopoma whiteheadi, E. A. Smith, Ann. & Mag. Nat. Hist. ser. 5, vol. xx. p. 133 (1887). Hab. Northern Borneo (Whitehead). |
