166 LOBIGER. 



terior terminations, inner lip smooth and thin, outer lip a little 

 inflexed behind, its edge acute. Alt. 6, diam. 3'5 mill. (Nev.). 



Southern province of Ceylon (Nevill) ; " Soiv and Pigs" reef, Port 

 Jackson, Australia (Brazier). 



Oxynoe delicatula NEV., Journ. Asiat. Soc. Beng., xxxviii, pt. 2, 

 67, pi. 13, f. 5. Lophocercus delicatulus ANGAS, P. Z. S., 1877, p. 

 190. 



The much smaller expansion of the outer lip, etc., at once distin- 

 guishes this species from 0. sieboldi, which it most resembles. The 

 animal of this species proves it to be a true Oxynoe. It is of a pale 

 sea-green color, spotted with round torquoise-blue spots. It is found 

 on reefs in very shallow water. (Nev.~). 



0. HARGRAVESI H. Adams. Frontispiece, fig. 4. 



Shell very thin, subpellucid, ovoid, produced behind, involute, 

 white, ornamented with longitudinal opaque streaks following the 

 lines of growth. Aperture ample, rounded below, narrowed above ; 

 inner lip thin, slightly reflexed ; outer lip acute, inflexed above. 

 Alt. 7, diam. 4* mill. (Ad.). 



New Hebrides (coll. Hargraves). 



Oxynoe hargravesi H. AD., P. Z. S., 1872, p. 15, pi. 3, f. 30. 



Genus LOBIGER Krohn, 1847. 



Lobiger KROHN, Ann. Sci. Nat. (3), vii, p. 52. Type L. philippii 

 =L. serradifalci Calc. 



The species are few, but widely dispersed, coinciding remarkably 

 with Oxynoe, in distribution. Only L. serradifalci has been satis- 

 factorily investigated. 



Geographic distribution of species. 



Mediterranean : L. serradifalci (p. 167). 



West Indies : L. souverbii (Dipterophysis, p. 168). 

 Indo-Pacific: L. viridis, Sandwich Is. (Pterygophysis, p. 169). 



L. nevilli, Ceylon, (p. 168). 



L. wilsoni, S. Australia (p. 168). 



The locality of L. pellucidus Ad. is unknown. 



Lobiger cumingi A. Ad. is a species of Volvatella (see Man. Conch., 

 xv, p. 385). 



