| OCR Text |
Show 1391.] THE SHELLS OF PERAK. 345 which, however, generic or subgeneric distinctions should Palaina is to be restricted to those species which have a constriction at the beginning or within the first third of the last whorl, but no plaits or lamellae. D. superba having a strongly developed columellar plait, canuot therefore be classed as a Palaina, but is a true Diplommatina, and by its short palatal plait visible above the aperture belongs to the same section as the four preceding species. 76. DIPLOMMATINA MIRABILIS, Godw.-Aust. & G. Nev. Diplommatina mirabilis, Godw.-Aust. & G. Nev. P. Z. S. 1879, p. 739, t.lx. figs. 4, 4a, 4 6. Bukit Pondong (Townsend). Fam. PUPINIDCE. 77. PUPINA AUREOLA, Stol. Pupina aureola, Stoliczka, J. As. Soc. Beng. xii. 1872, p. 267, t. x. figs. 11, 12 ; de Morgan, Bull. p. 66. Mt. Tchora, Kinta valley (de Morgan). I received from the late Mr. R. Damon some specimens of a Perak Pupina under the name of P. lahatensis, de Morgan, apparently collected by that gentleman. The name was probably abandoned by the author, as it does not appear in his paper. One of these examples corresponds exactly with the figure of P. aureola, Stol., the others with P. lowi, de Morgan. 78. PUPINA LOWI, de Morgan. Pupina lowi, de Morgan, Bull. p. 66, t. iii. fig. 3. Lahat, Kinta valley (de Morgan). 79. PUPINA ARULA, Bens. Pupina arula, Benson, Ann. Mag. N. H. 2nd ser. Xvii. p. 230 ; Pfr. Mon. Pneum. Suppl. i. p. 95 ; Novitat. Conch, ii. p. 141, t. xxxvii. fig. 7-9 ; Crosse, J. de Conch, xxvii. 1879, p. 340 ; v. Molldff. 1. c. p. 314. Bukit Pondong (Townsend, Hungerford). The Perak form is smaller, 8 instead of 9 millim. in length, comparatively more slender, showing a diameter of 4 millim. instead of 5, or a proportion of axis to diameter of 2 : 1 instead of 9 : 5 ; the apex is more pointed. It should therefore be separated as a variety : Var. PERAKENSIS, V. Molldff. : testa minore, graciliore, apice acutiore ; alt. 8, diam. 4 mm. 80. PUPINA ARTATA, Bens. Bukit Pondong (Dr. Townsend fide Crosse) ; Kinta valley (de Morgan). The small Pupina collected by Hungerford at Bukit Pondong, which I took for P. artata, Bens., following Crosse, is certainly different from Benson's species. It is smaller, the apex more pointed, |
