BY THE REV. J. E. TENISON-WOODS, 
1069 
A. OLiGOPLEURis, von Moll. l.c. p. 310. 
Bukit Pondok. 
A. MICRODISCUS, von Moll. l.c. p. 311. 
The peculiar distortion of the last whorl, which first descends 
after the constriction, and is again deflected towards the aperture, 
separates this Diinute species from all forms known (von M61- 
lendorfi'). 
Bukit Pondok. 
A. PARVULUS, von Moll. l.c. 
Another minute form, still smaller than the last to which it 
appears somewhat related. It difiers, however, in the constriction 
being nearer the aperture, almost regular last whorl, the broad 
outer and very prominent inner peristome (von Moll.). 
Bukit Pondok. 
A. MICROCONUS, von Moll. l.c. 
By the conical shape, the regular last whorl and the reticulate 
sculpture this small species is very well distinguished from all 
Indian Alyccd. 
Bukit Pondok. 
A. .TOussEAUMEi, De Morgan, Le Nat. VII. 1885, No. 9, p. 70 \ 
von Moll. l.c. p. 312. 
Limestone hills of the valley of the Kinta, summit of Mt. Lano. 
A. ciiAPERi, De Morgan, l.c. p. 70, probably = A. gibbosulus, 
Stol. Ita von Moll. 
Penang ; Bukit Pondok. 
Family DIPLOMM ATINACEAE, Benson. 
(Including the genera Paxillus, Palaina, Arinia and Diplommatina). 
28. Diplommatina, Benson, Ann. and Mag. Nat. Hist. 1849, 
8ept. p. 193. 
i^hell sub-oval, with the slightest trace of an umbilical slit ; 
jicristoine interrupted expanded ; ojjerculum thin, between testa- 
ceous and horny, with a projecting thin claw. 
