Diversity and biogeography of land snails (Mollusca, Gastropoda) in the limestone hills of Perak, Peninsular Malaysia Author Foon, Junn Kitt Institute for Tropical Biology and Conservation, Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia & Rimba, 22 - 3 A, Casa Kiara 2, Jalan Kiara 5, 50480 Kuala Lumpur, Malaysia Author Clements, Gopalasamy Reuben Rimba, 22 - 3 A, Casa Kiara 2, Jalan Kiara 5, 50480 Kuala Lumpur, Malaysia & Department of Biological Sciences, Sunway University, No. 5 Jalan Universiti, 47500 Bandar Sunway, Selangor, Malaysia Author Liew, Thor-Seng Institute for Tropical Biology and Conservation, Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia & Rimba, 22 - 3 A, Casa Kiara 2, Jalan Kiara 5, 50480 Kuala Lumpur, Malaysia thorsengliew@gmail.com text ZooKeys 2017 2017-07-04 682 1 94 http://dx.doi.org/10.3897/zookeys.682.12999 journal article http://dx.doi.org/10.3897/zookeys.682.12999 1313-2970-682-1 0AE82225C67E4D908BBEC30124E6C312 FFBCE458FFDBFFC93B2EFFB2F562FFBE 3484859 Hemiplecta cymatium (Pfeiffer, 1856) Figure 17D Materials examined. mykarst-184 Bat Cave : BOR/MOL 9855, BOR/MOL 9795, BOR/MOL 9825. Prk 53 Hill KF : BOR/ MOL 10740 , BOR/ MOL 10656 , BOR/ MOL 10686 . mykarst-027: BOR/MOL 9104. Prk 55 G. Pondok : BOR/ MOL 11611 . Distribution. In the states of Kedah, Penang, Perak, Kelantan and Pahang in Peninsular Malaysia ( Maassen 2001 ). Elsewhere, in Jalor (=Yala), southern Thailand ( Maassen 2001 ). Remarks. Large shell. Perak shells differ from Penang shells only by their flatter spire. Whorls brown with darker periphery. Peripheral keel pronounced. Shell surface has numerous short spiral crenulations.