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Show 1891.] THE SHELLS OF PERAK. 341 52. CYCLOPHORUS BORNEENSIS, Mete. Cyclophorus borneensis, de Morgan, Bull. p. 60. Kinta valley (de Morgan). As this Bornean form has been found also in Sumatra, by Prof. von Martens, at Bukit Tima, Singapore, and by Stoliczka in Penang, it may very well range into Perak. Still, a revision of de Morgan's identification would be desirable in this very difficult group. 53. CYCLOPHORUS SEMISULCATUS, Sow. Bukit Pondong (Townsend) ; Perak generally (de Morgan). 54. CYCLOPHORUS AURANTIACUS, Schumacher. Cyclophorus aurantiacus, E. von Martens, Shells of Mergui, Journ. Linn. Soc, Zool. xxi. 1887, p. 157, t. xiv. Cyclophorus lowi, de Morgan, Le Nat. 1885, p. 69. Cyclophorus malaganus, de Morgan, Bull. p. 62 ; v. Molldff. 1. c. p. 3U9. Larut (coll. Lnd. Mus.) ; Perak generally (de Morgan). From the able paper of Prof, von Martens I have convinced myself that the large Perak Cyclophorus does not belong to C. malayanus, but to C. aurantiacus, Schum. C. lowi of de Morgan's first paper is not mentioned in the second ; he seems to have entirely ignored his former publication in the latter. Whether C. malayanus, mentioned by G. Nevill, Handl. 1878, p. 267, as brought from Bukit Pondong by Dr. Townsend, is the true species of Benson or likewise a form of C. aurantiacus, I am unable to say. 55. CYCLOPHORUS EXPANSUS, Pfr. Cyclophorus expansus 1 var., G. Nevill, Handl. 1878, p. 269. (" Appears to be new ; it is near C. cybeus.") Bukit Pondong (Townsend). 56. LAGOCHILUS TOWNSENDI, Crosse. Layochilus townsendi, Crosse, J. de Conch, xxvii. 1879, p. 208, t. viii. fig. 3; de Morgan, Bull. p. 63; v. Molldff. 1. c. p. 309. Bukit Pondong (Townsend, Hungerford); Perak generally (de Morgan). 57. LAGOCHILUS SWETTENHAMI, de Morgan. Lagochilus swettenhami, de Morgan, Bull. p. 64, t. iv. fig. 8. Kinta and Pluss valleys (de Morgan). It does not appear whether " Cyclophorus baylei," de Morgan, Le Nat. 1885, p. 69, is identical with the first or the second of these species. 58. LEPTOPOMA ASPIRANS, Bens., Ann. Mag. N. H. 2nd ser. xvii. 1856, p. 229. Bukit Pondong (Townsend, Hungerford). |