1891.] THE SHELLS OF PERAK. 343 



65. Alyc^us MiCRODiscus, V. MiilUff. (Plate XXX. figs. 10- 

 10 6). 



AlyccEus microdiscus, v. MoUdff. 1. c. p. 311. 

 Bukit Pondong {Hungerford). 



66. ALYCiEus PARVULUS, T. MoUJfF. (Plate XXX. figs. 11- 

 116.) 



Ali/creus partmlus, v. MolldfF. 1. c. p. 31 I. 

 Bukit Pondong {Hunyerfurd). 



67. ALYCiEus MiCROCONUs, V. Mcilldff. (Plate XXX. figs. 12- 

 126.) 



Alyaeus tnicroconus, v. MoUdff. 1. c. p. 311. 

 Bukit Pondong (Hunger/ord). 



68. Alyceus jousseaumi, de Morgan. 



Alycceus jomseaumi, de Morgan, Le Nat. 1885, p. 70 ; Bull. p. 54, 

 t. iv. fig. 4 ; v. MoUdff. 1. c. p. 312. 



Mt. Lano, Kinta valley {de Morgan). 



This fine species, the largest Alycceus known to me, is aUied to 

 A. umbonafis, Bens., and A. physis, Bens., but at once to be distin- 

 guished by the formation of two peristomes rather distant from each 

 other, somewhat iu the manner of Cyclophorus foliaceus, Cheain. 



Fam. DlPLOMMATINID.fi. 



69. Opisthostoma paulucci^, Crosse & Nevill. 

 Opisthostoma pauluccitx, Crosse & Nevill, J. de Conch, xxvii. 



1879, pp. 197,205,339, t. viii. fig. 1; Godw.-Aust. & G. Nev. 

 P. Z. S, 1879, p. 738, t. Ix. figs. 2, 2a, 26; v. MoUdff. 1. c. p. 313. 

 Bukit Pondong {Townsend). 



70. Opisthostoma perakense, Godw.-Aust. & G. Nev. 

 Opisthostoma perakense, Godw.-.\ust. & G. Nev. P. Z. S. 1879, 



p. 738, t. Ix. figs. 1, 1 a, I 6 ; v. MoUdff. 1. c. p. 313. 

 Bukit Pondong {Townsend, Hunyerford). 



71. Diplommatina (Sinica) CANALicuLATA, V. Molldff. (Plate 

 XXX. fig. 13.) 



Diplommatina {Sinica) canaliculata, v. MoUdff. 1. c. p. 312. 

 Bukit Pondong {Hungerfurd). 



72. Diplommatina (Sinica) nevilli, Crosse. 



Palaina nevilli, Crosse, J. de Conch, xxvii, 1879, pp. 203, 339, 

 t. viii. fig. 2. 



Diplommatina nevilli, v. Molldff. 1. c. p. 313. 

 Bukit Pondong {Townsend, Hungerford). 



73. Diplommatina (Sinica) ventriculus, v. Molldff. (Plate 

 XXX. fig. 14.) 



T. dcxlrorsa, vix rimuta, ventricoso-conica, luicscens. Anfr. 7g, 



