418 Mr. E. A. Smith on 



Diplommatina symmetrica^ Hedley. (PI. IX. fig. 27.) 



Diplommafina symmetrica, Hedley, Proc. Linn. Soc. N. S. W. 1891 , 

 vol. vi. p. 107, pi. xii. fig. 39. 



Hah. Kapaur {Doherty) ; Basilaki Island (Hedley). 



The spiral strise between the fine oblique lamellae 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. (Pi. IX. figs. 28, 29.) 



Testa siuistrorsa, imperforata, ovato-acuminata, flavescen.s, ad 

 apicem rufescens, vel purpureo-fusca ; anfractus 6, perconvexi, 

 apicales duo Ifeves, cseteri costellis obliquis arcuatis tenuibus 

 numerosis instructi, et microscopice spiraliter striati, peuultimus 

 inflalus, ultimum latitudine a^quaus, ultimus supra aperturam 

 constrictus, antice ascendens : apertura obliqua, irregulariter 

 ovata ; peristoma aurantiacum, duplex, margine interne in- 

 crassato, haud continuo, dente columellari minuto instructo, 

 externo tenui, expanse, caUo tenuissimo continuo, pone lamella 

 altera valida munito. 



LoDgit. 3 miUim., lat. 2 ; apertura cum perist, I5 lata. 



Hah. Kapaur. 



Seen from behind the penultimate whorl is large and con- 

 spicuously tumid. 



Palaina Dohertyi. (PI. IX. figs. 30, 31.) 



Testa sinistrorsa, imperforata, elongata, turrita, sordide albida, ad 

 apicem fusco-cornea ; spira elongata, ad apicem obtusa ; an- 

 fractus 7, convex!, apicales duo laeves, cteteri lamellis obliquis 

 tenuibus instructi, penultimus ultimo conspicue latior, ultimus 

 antice ascendens ; apertura circularis, alba ; peristoma pallidum, 

 latissime plane expansum, margine interne continuo, externo 

 interrupte. 



Longit. 3 miUim., diam. Ik ; apertura cum perist. 1\ lata. 



Hab. Kapaur. 



Under a compound microscope spiral stri« between the 

 lamellje are discernible. The flat expanded peristome is 

 finely concentrically striated. 



