168 LOBIGER. 



Lobiger pellucidus A. AD., P. Z. S., 1854, p. 94. Lophocereus 

 pellucidus ADAMS, Gen. Rec. Moll., ii, p. 31. FISCHER, Journ. de 

 Conchy 1., 1856, p. 274 (copy of original description). Oxynoe pel- 

 lucida MORCH, Journ. de Conch., 1863, p. 46. 



This species differs from L. philippii in being white and nearly 

 pellucid, and from L. cumingii in the very different form of the 

 aperture, this not being produced into a narrow spout-like canal pos- 

 teriorly. (Ad.~). 



L. NEVILLI Pilsbry, n. n. PI. 10, figs. 34, 35. 



Shell ovate, involute, thin, greenish, the last whorl much inflated 

 behind. Aperture oblong, attenuated and rounded in front, shortly 

 produced and somewhat narrowed behind ; inner lip thin, in part 

 straight, smooth, slightly elevated ; outer lip arcuately expanded, 

 thin at the edge. Alt. 5'5, diam. 3'5 mill. (Nev.). 



Southern province of Ceylon. 



Lobiger viridis G. & H. NEVILL, Journ. Asiat. Soc. Beng., xxxviii, 

 pt. 2, p. 68, pi. 13, f. 6 (1869). Not L. viridis Pease, 1863. 



L. nevilli differs from the other species of the same genus in being 

 anteriorly much more gradually rounded, as also by its great tumid- 

 ity near the spire. (Nevill.'). 



L. WILSONI Tate. Frontispiece, fig. 5. 



Animal with the body produced into a very narrow, pointed, 

 smooth tail of a green color, shortly extended beyond the shell. 

 Foot with two oblong-rounded and pale-green lobes, which are some- 

 what attenuated into a broadish stalk. 



Shell thin, flexible, straw-yellow; spire rudimentary but involute. 

 Somewhat pyriform, slightly attenuated in front, and truncated 

 apically ; aperture narrow-ovate, truncate behind. Surface finely 

 striated. Length 8, width 5 mill. (Tate). 



Lower end of South Channel of Port Phillip, South Australia, 

 seven to sixteen fathoms (J. B. Wilson). 



Lobiger wilsoni TATE, Trans, and Proc. and Rep. Roy. Soc. South 

 Australia, xi, p. 66, pi. 11, f. 12 (1889). WILSON, Proc. Roy. Soc. 

 Victoria (n. ser.) ii, p. 66 (1890). 



Subgenus DIPTEROPHYSIS Pilsbry, 1896. 



Like Lobiger, but with a single pleuropodial lobe on each side. 

 L. SOUVERBII Fischer. PI. 10, figs. 39, 40, 41, 42. 



Shell ovoid, thin, pellucid, longitudinally striated, dilated in the 

 middle, obliquely truncated in front, rounded behind and slightly 



