1891.] THE SHELLS OF PERAK. 343 



65. Alyc^us microdiscus, v. MolUff. (Plate XXX. figs. 10- 



10 6). 



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

 Bukit Pondong {Hungerford). 



66. Alyceus parvui.us, v. Molldff. (Plate XXX. figs. 11- 



11 h.) 



Ahjc(Bus parvulus, v. MolldflF. 1. c. p. 31 1. 

 Bukit Pondong {Hung erf or d). 



67. Alyc^us microconus, v. MoUdif. (Plate XXX. figs. 12- 

 126.) 



Alycceus microconus, v. Molldff. 1. c. p. 311. 

 Bukit Pondong {Hiingerford). 



68. Alyc.eus jousseaumi, de Morgan. 



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

 t. iv. fig. 4 ; V. Molldff. 1. c. p. 312. 



Mt. Lano, Kinta valley {de Morgan). 



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

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

 guished by the formation of two peristomes rather distant from each 

 other, somewhat in the manner of Cyclojphorus foliaceus, Cheinn. 



Fam. DlPLOMMATINID^. 



69. Opisthostoma PAULucciiE, Crosse & Nevill. 

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



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

 P. Z. S. 1879, p. 7'i'S, t. Ix. figs. 2, 2a, 2b; v. MoUdtf. 1. c. p. 313. 

 Bukit Pondong (Townsend). 



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

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



p. 738, t. Ix. figs. 1, 1 «, 1 6 ; V. Molldff. 1. c. p. 313. 

 Bukit Pondong (Townsend, Hungerford). 



71. DiPLOMMATTNA (SiNICa) CANALICULATA, V, Molldff. (Plate 



XXX. fig. 13.) 



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

 Bukit Pondong {Hungerford). 



7'2. 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. dexti-orsa, vix rimata, ventricoso-conica, lutescens. Anfr. 74, 



