SPECIES OP LAND-SHELLS PEOM BOENEO. 343 



peripheriam carina filiformi cinctus, infra carinam Isevis ; apertura parva, 

 angusta ; peristoma tenue, margine columellari leviter incrassato et reflexo. 



Alt. 2A miilim., diam. 2f . 



Hah. Busau or Busan, Sarawak. 



This species is remarkable for the character of its sculpture. 

 The spirally lirate apical whorls, the costulatioa of the rest, the 

 keel encircling the body-whorl and its smooth base are the prin- 

 cipal distinguishing features. The carina is risible above the 

 suture upon the peuultimate and preceding whorls. 



3. SiTALA BAEITEKSCS. (PI. XXV. fig. 3.) 



Testa trochoidea, pallide fuscescens, vix rimata, spira regulariter conica; 

 anfractus 6, convexiusculi, lente accrescentes, striis spiralibus tenuissimis, 

 lineisque incrementi obliquis sculpti, ultimus in medio acute angulatus, 

 carinatus, inferne convexiusculus, spiraliter et longitudinaliter striatus ; 

 apertura parva, ad carinam angulata ; peristoma teuue, margine colu- 

 mellari leviter arcuato, incrassato et reflexo. 



Alt. 2| miilim., diam. 2f. 



Hah. Barit Mountain. 



The spiral striae are about seven or eight in number upon the 

 penultimate and upper volutions. 



4. SiTALA MOLUEKSIS. (PL XXY. fig. 4.) 



Testa turbinata, conica, subrimata, fusca; anfractus 6, regulariter 

 crescentes, convexi, liris paucis tenuibus cincti, inerementique lineis obliquis 

 sculpti, ultimus ad peripheriam acute rotundatus, et carina filiformi ornatus, 

 infra carinam baud spiraliter liratus, convexiusculus; apertura parva, 

 lunata; peristoma tenue, margine columellari oblique arcuato, superne 

 leviter incrassato et reflexo. 



Alt. 2| miilim., diam. 2|. 



Sab. Molu or Mulu Mountains, N. Borneo. 



This species is of a darker colour than S. laritensis, has the 

 whorls rather more convex, the last less acute at the middle, and 

 much stronger spiral sculpture. Under the microscope, in addi- 

 tion to the lirae, very fine spiral striae are more or less observable. 



5. Ctclophoeus Eteeetti. (PI. XXV. figs, 5, 5 a.) 



Testa depressa, orbicularis, latissime et perspective umbilicata, saturate 

 castanea, ad peripheriam zona angusta nigrescente superne pallide margin- 

 ata cincta, lineis albidis irregularibus undulatis subzigzag-formibus ornata ; 

 anfractus 4-4|, convexi, sutura profunda sejuncti, lineis incrementi 

 tenuibus obliquis sculpti, ultimus antice descendens, infra pallidior; 

 apertura sordide caerulescens, ovato-circularis, latior quam alta ; peristoma 



LLNN. JOTJEIS". — ZOOLOGY, VOL. XXIT. 27 



