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Show 1891.] THE SHELLS OF PERAK. 347 Fam. VIVIPARIDCE. 87. VIVIPARUS SUMATRENSIS, Dunker. Paludina bengalensis, subsp. polygramma, G. Nevill, Handl. Moll. Ind. Mus. ii. 1884, p. 22. Paludina sumatrensis, de Morgan, Bull. p. 67. Qualla Kangsa (Townsend) ; Perak generally (de Morgan). 88. BYTHINIA KINTANA, de Morgan. Bythinia kintana, de Morgan, Bull. p. 68, t. iii. fig. 7. Kinta valley (de Morgan). Fam. ASSIMINEID/E. 89. ASSIMINEA CARINATA, Lea. Omphalotropis carinata, de Morgan, Bull. p. 69. Assiminea carinata, Boettger, Jahrb. d. nial. Ges. xiv. 1887, p. Kinta valley (de Morgan). Dr. Boettger, in his important monograph of Assiminea, considers this species to be a true Assiminea. De Morgan's note on its habitat does not contradict this classification ; according to him it lives in marshy parts of the forest near brooks as well as in vegetable mould. Fam. MELANIIDCE. 90. MELANIA (STRIATELLA) TUBERCULATA, Mull. Melanoides tuberculata, de Morgan, Bull. p. 73. Prov. Wellesley (de Morgan). 91. MELANIA (STRIATELLA) MALAYANA, ISS. Melania tuberculata, var. malayana, Issel, Moll. Born. p. 100. Melania malayana, Brot, Mart. Chemn. Mel. p. 253, t. 2o. figs. 5, 5 a. Melania tuberculata, subsp. malayana, G. Nevill, Handl. ii. p. 247. Melanoides malayanus, de Morgan, Bull. p. 74. Sarawak (Issel). Abundant in all the brooks of the Malay Peninsula (de Morgan). 92. MELANIA (STRIATELLA) TRUNCATULA, Lam. Melanoides truncatulus, de Morgan, Bull. p. 73. Prov. Wellesley (de Morgan). 93. MELANIA (MELANOIDES) EPISCOPALIS, Lea. Melania variabilis, Bens., subsp. episcopalis, G. Nevill, Handl. ii. p. 256. bermyla episcopalis, de Morgan, Bull. p. 72. Qualla Kangsa (Townsend fide Nevill). Abundant in Perak generally (de Morgan). |