418 Mr. BE. A. Smith on 
Diplommatina symmetrica, Hedley. (Pl. IX. fig. 27.) 
Diplommatina symmetrica, Hedley, Proc. Linn. Soc. N. S. W. 1891, 
vol. vi. p. 107, pl. xii. fig. 39. 
Hab. Kapaur (Doherty) ; Basilaki Island (Hedley). 
The spiral strie between the fine oblique lamelle are 
excessively fine and only discernible under a compound micro- 
scope. The double lip is badly depicted in Mr. Hedley’s 
figure. The inner margin is thickened and not continuous, 
and of a reddish colour, the outer being thin, expanded, paler, 
and united above by a thin callus. Outside this lip is a 
second strong lamella. 
Diplommatina papuana. (Pl. IX. figs. 28, 29.) 
Testa sinistrorsa, imperforata, ovato-acuminata, flavescens, ad 
apicem rufescens, vel purpureo-fusca; anfractus 6, perconvexi, 
apicales duo leves, czeteri costellis obliquis arcuatis tenuibus 
numerosis instructi, et microscopice spiraliter striati, penultimus 
inflatus, ultimum latitudine equans, ultimus supra aperturam 
constrictus, antice ascendens; apertura obliqua, irregulariter 
ovata; peristoma aurantiacum, duplex, margine interno in- 
crassato, haud continuo, dente columellari minuto instructo, 
externo tenui, expanso, callo tenuissimo continuo, pone lamella 
altera valida munito. 
Longit. 3 millim., lat. 2; apertura cum perist. 13 lata. 
Hab. Kapaur. 
Seen from behind the penultimate whorl is large and con- 
spicuously tumid. 
Palaina Dohertyi. (Pl. IX. figs. 30, 31.) 
Testa sinistrorsa, imperforata, elongata, turrita, sordide albida, ad 
apicem fusco-cornea; spira elongata, ad apicem obtusa; an- 
fractus 7, convexi, apicales duo leves, ceteri lamellis obliquis 
tenuibus instructi, penultimus ultimo conspicue latior, ultimus 
antice ascendens ; apertura circularis, alba; peristoma pallidum, 
latissime plane expansum, margine interno continuo, externo 
interrupto. 
Longit. 3 millim., diam. 14; apertura cum perist. 1} lata. 
Hab. Kapaur. 
Under a compound microscope spiral strie between the 
lamelle are discernible. The flat expanded peristome is 
finely concentrically striated. 
