MITRIDA, 167 
whorl inversely conical; aperture narrowly elongate, base emar- 
ginate; lip sinuate at the suture; columella plicated, anterior 
plice strongest. Cretaceous ; Europe and India. 
Stoliezka refers this group to Conidze, as he does also doubt- 
fully Imbricaria and Cylindra, which he considers closely 
related. The two latter are known to be in no way closely 
related to Conus, and Gosavia possesses every characteristic of 
a Volute; indeed I cannot separate it readily from such forms 
as V. musica. V. Indica, Stol. (liv, 35). India. 
Lyris, Gray. 
Distr.—l6 sp. W. Indies, E. Africa, Indian Ocean, Japan, 
Australia, W. Coast of Central America. JL. Delessertiana, 
Petit (liii, 22). 
Shell ovately fusiform, solid; spire acuminate; whorls longi- 
tudinally ribbed ; aperture ovate, rather narrow ; columella with 
numerous transverse plaits, two ‘lower ones much the largest ; 
outer lip externally ribbed. Operculate. 
The species are smaller than in Voluta, and Mitrzform, con- 
necting with the genus Mitra. 
EN#ZTA, H.and A. Adams. Outer lip thickened, inflected and 
bearing an obtuse tooth uponits middle inner margin. L. harpa, 
Barnes (liii, 23). 
Microvouuta, Angas. 
Distr.—M. Australis, Angas  liii, 24, 25). 
Shell small, ovately fusiform, solid, smooth, shining ; spire as 
long as the aperture, apex papillary; whorls simple; aperture 
narrowly ovate; columella with four strong transverse plaits, 
the anterior one the smallest; outer lip thin, simple, slightly 
contracted at the base; base rounded, spout-shaped, with a 
flexuous bend upwards towards the columella, which is a little 
thickened and reflected below the plaits. The deep siphonal 
notch and the toothed projection of the base of the pillar, so 
characteristic of Voluta, are here wanting. 
The above description is drawn up from the only known 
species, and probably many of its characters are of slight 
importance. The animal is unfortunately unknown. 
Famity MITRIDA#. 
The animal has a small,narrow head ; tentacles close together 
at the base ; eyes near the base or towards the outer middle of 
the tentacles ; proboscis cylindrical, flexible, very extensible, 
mantle enclosed ; siphon simple at the base ; foot small, trian- 
gular, usually truncate in front. 
The dentition of the Mitridz (x, 9) presents several distinct 
types ; so that Trosehel and Gill have divided the family upon 
