APPENDIX. 237 



dilute olive, the spire salmon-tinted above. The peristome is less 

 expanded than in the typical form, and there is no parietal tubercle. 

 Whorls 51. Length 48, diam. '24, aperture 29 mill. 

 This is a well-marked sub-species. 



P. IIOBSONI Cox. Page 91. Frontispiece, figs. 9, 10. 



A specimen generously sent by Dr. Cox is figured. The color is 

 a rich chestnut-yellow, with triangular reddish-chestnut spots on the 

 last 1^7 whorls. Whorls slightly exceeding 5, convex, the earlier 2^ 

 punctate, the last whorl a little more coarsely corrugated than P. 

 elobatus or sanchristovalensis, the spirals but little interrupted or 

 branching on the base. The aperture is not oblique, is slightly 

 whitish in the throat, becoming somewhat orange-brown or golden- 

 brown toward and upon the lip, which is slightly expanded ; lift lus- 

 ter and color of the interior being peculiarly changeable. Columella 

 nearly white, broadly dilated, arched upward over the umbilicus. 

 Length 51, diam. 25, aperture 33^ mill. 



I think this form will be considered a variety of P. uliyinosus, 

 from which it may differ in not being lipped with white. 



AMPHIDKOMUS. 



A. INVERSUS subsp. ANXAMITICUS C. & F. Page 170. 



In the text I failed to give the original reference to var. roseotincta. 

 Dr. von Mollendorff writes : " Near Chaya [on the east side of the. 

 Malay Peninsula] Mr. Roebelen collected a fine variety of A. cinna- 

 miticus Cr. & Fisch. with rose-colored apex which I name var. roseo- 

 tincta" (Mlliiff., P. Z. S., 1894, p. 150, under A. moniliferus}. 



A. MET ABLET US MlldtF. 



Dr. von Mollendorff reports a form of this species from the island 

 Bay-min. (Nachrbl. 1900, 133). 



