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Show 334 DR. O. F. VON MOELLENDORFF ON [June 2, 19. HEMIPLECTA STRIATA, Gray, var. LEECHI, de Morg. Hemiplecta leechi, de Morgan, Bull. p. 31, t. i. fig. 9. Abundant all over Perak (de Morgan). The author compares his form with LI. crossei and H. weinkaufiluna I think, however, that it will prove to be a variety of the common species of Singapore and the Straits generally, Nanina striata, Gray, or Helix naninoides, Benson. 20. HEMIPLECTA SAKAYA, de Morg. Oxytes sakaya, de Morg. Bull. p. 32, t. ii. fig. 1. Mt. Kerbou, 1200 metres altitude. Allied to H. cymatium, Bens., of which it is perhaps a variety. The specimen collected by Dr. Hungerford and mentioned by me (I. c. p. 302) as H. cymatium, probably belongs to this form. 21. RHYSOTA sp. aff.pluto, Pfr. Cf. v. Molldff. 1. c. p. 302. Perak (Hungerford). 22. ARIOPHANTA KINTANA, de Morgan. Ariophanta kintana, de Morg. Bull. p. 33, t. ii. fig. 2. Kinta district (de Morgan). This was probably mentioned by Nevill (Handl. Moll. Iud. Mus. 1878, p. 20) as Ariophanta, n. sp. (prox. A. interruptce), from Qualla Kangsa, Perak. Ariophanta lahatensis, de Morgan, Bull. p. 34, t. ii. fig. 4, between Lahat and Ipoh, Kinta valley, seems to be based on an immature specimen, which might very well be the young of the present species. Fam. TROCHOMORPHID.E. 23. TROCHOMORPHA TIMORENSIS, v. Mart. Trochomorpha timorensis, de Morgan, Bull. p. 35. Mt. Tchora, Kinta valley (de Morgan) ; Penang (Stoliczka). Helix swettenhami, de Morgan, Le Naturaliste, 1885, p. 68, and LI. thieroti, de Morgan, ibid. p. 68, both belonging to either Trochomorpha or else Plectotropis, do not appear in his second memoir. The latter species probably is the one now mentioned as T. timorensis. Fam. HELICID^E. 24. »AiauMA PERAKENSIS, Crosse. Geotrochus perakensis, Crosse, J. de Conch, xxvii. 1879, p. 199, t. viii. fig. 4 ; de Morgan, Bull. p. 38. Helix perakensis, v. Molldff. 1. c. p. 303. Perak (Townsend) ; Kinta valley (de Morgan). Most decidedly not a Geotrochus, but one of the conical Fruticicola-like shells, for which Adams created the subgenus Satsuma ( = Fruti-ootrochus, Kob.). This group is widely spread over Eastern Asia, |