58 Christmas Island. 



Family AURICTJLID^. 

 8. Pythia scarabaeus (Linn.). (PI. VHI, Fig. 15.) 



Pijthia scarabeeus, Pfeiffer, Mou. Auric, p. 82. 



JIab. — Flying Fish Cove. Widely distributed in the islands?' 

 of the Malay Archipelago and Oceania. 



The specimens from Christmas Island are much smaller than 

 usual, the largest having a length of only 20 mm. 



9. Melampus luteus (Quoy & Gaimard). (PI. VIIT, Fig. 16.) 



Melanipiis latens, Pfeiffer, Mou. Auric, j). 36. 



Hah. — Same as preceding. 



Also rather smaller than usual. Length, 14 mm. 



10. Melampus fasciatus (Doshayes). (PI. VIII, Fig. 17.) 

 Melampus fasciatits, Dash. : Pfeiffer, Mou. Auric, p. 38. 



Hah. — Same as preceding. 



Again the examples are small, only 11-J-mm. in length. Some 

 are red-banded, whilst others are of a livid greyish tint without 

 bands, the spire being slate-blue in all. 



11. Melampus castaneus (Mlihlfeldt). (PI. VIII, Fig. 18.) 



Melampus castaneus, Pfeiffer, Mou. Auric, p. 30. 



Hah. — Sandwich and Samoa Islands. 



Only a single young specimen was obtained by Mr. Andrews. 

 It agrees in every respect with examples from the Hawaiian.' 

 Islands. 



Family CYCLOPHORID^. 

 12. Leptopoma mouhoti, Pfeiffer, var. (PL VIII, Figs. 19, 20.) 



Leptopoma iiwnlioii, Pfeiffer, P.Z.S., 1861, p. 18.5; Monog. Pueumou., vol. iii,. 

 p. 82 ; Reeve, Conch. Icon., vol. xiii, pi. v, fig. 25. 



Testa brevitcr conica, umbilicata, tenuiuscula, subpellucida,. 

 sordide albida, epidermide tcnuissinia lutesccntc induta, iuterdum 

 infra peripheriam fusco maculata ; spira conoidca, ad apicem baud' 

 acuta ; anfractus 5, convexi, liris spiralibus filiformibus (in anfr. 

 ultimo circiter 6) striisque inter liras spiralibus tenuibus, incre- 

 menti liueis obliquis ornati, ultiraus in medio vix angulatus, liris- 

 circa 12 (mcdiana ad peripheriam cantoris paulo-fortiori), succiuctus ; 

 apertura fere circularis, long, totius ^ paulo superans ; peristoma 

 anguste expansum, baud duplicatum, marginibus callo tenui junctis^ 

 columellari sinuato. Long. 11-^ mm., diam. maj. 11^ mm. 



