458 Mr. E. A. Smith on the 



by sinistral and dextral specimens. The first three occur at 

 Bunguran, the fourth at Sirhassen. 



13. Opeas subula (Pfeiffer). 



Opeas subida, PMiTev, Mon. Hel. vol. ii. p. 158 (BuUmus). 



Hah. Bunguran and Sirhassen [Everett] ; Sarawak [Hose, 

 hi Brit. Mns. and Mus. Cuming) ; Cuba [PJr.). 



I cannot discover any differences in the specimens from the 

 Natuna Islands and Borneo which are sufficient to separate 

 them from West-Indian examples. Pfeiffer himself also 

 failed to distinguish them, for a specimen from Sarawak in 

 the Cumingian collection is labelled in his own handwriting 

 "i?. subula, Pfr." Mr. C. Hose has recently presented a 

 large series of specimens, also from Sarawak, an examination 

 of which supports this decision. It also seems to me ques- 

 tionable whether either O.junceus (Gould), from the Society 

 and Sandwich Islands, or 0. oparanus (Pfeiffer), from Opara, 

 possess any real differences which can dissociate them from 

 this species. 



14. Fupa Moreleti, Brown. 



Pupa Moreleti, Brown, Joiim. de Conch. 1870, p. .393 ; Issel, Ann- 

 Mas. stor. nat. Genova, 1874, vol. vi. p. 41-5 i^Vtrtiyo). 



Hah. Bunguran {Everett)] Labuan (Broion). 



I am not quite certain of the identification of the Natuna 

 specimens with this species, as they do not agree in every 

 respect vvitli the diagnosis. They have only five instead of 

 six whorls, and the peristome is brownish, not white. 



15. J'ornatelUna natunensis. (PL XVI. fig. 7.) 



Testa parva, ovata, supcrne subconoidea, tennis, subpcllucida, pallide 

 fusccscens, ini])erforata, lineis iiicrcmrnli tenuibus striata ; an- 

 fractus 4, convoxi, apex magnus, rotundatus ; apertura perpcu- 

 diciilaris, inverse auriformis, lonj::it. totius h paulo minor ; perist. 

 tenuc, marginc cohimellari leviter contorto, baud incrassato rcl 

 reflexo ; lamina purictalis tenuissima, intrans. 



Longit. 2-5 millim., diam. Vb ; apertura 1"3 louga, -'b lata. 



Ilab. Bunguran. 



This genus occurs in the Philippine Islands, but has not 

 yet been discovered in Borneo. 



16. Cyclophorus aquilus, Sowerby. 

 Cyclophorus aqin'/iis, Sowerby, Reeve, Coucb. Icon. figs. 45 a, b. 

 Ilab. Bunu'uran and Sirhassen, 



