\ 
* CONUS. i 
band and used to rasp the food, being replaced by others as soon 
as those in action are injured by use, that I am inclined to form 
the Cones into a third suborder, which may be called Toxifera ; 
and it is probable that the Pleurotomidz, which are described 
by Lovén as having similar subulate teeth in two series, should 
be placed in the same suborder,as they appear to differ from the 
Cones chiefly in the veil being truncated and not produced round 
the base of the proboscis.”—Dr. J. E. Gray, Ann. and Mag. 
Rebeca Nene pe LTT 
An operculum normally exists in all the groups of Conus 
(probably in all the species), but it is so very small relative to 
the size of the shell as to have generally escaped observation, 
and is very seldom preserved in collections. It is corneous, 
narrowly elongated, with apical nucleus, and the impression of 
the muscular attachment varies from one-half to two-thirds of 
the inner surface. The opercula of aynumber of species of Cones 
are figured and described by Crosse and Marie, in Journal de 
Conchyl., 1874. 
Operculum of C. textile, Linn. (PI. 29, figs. 92, 93). 
Sections of the shell of Conus, showing the structure and plan 
of growth, are figured in Structural and Systematic Conchology, 
i, Pl. 1, figs. 6, 7,8. The anatomy of Conus tulipa, Linn., is 
illustrated and described in the same work, i, Pl. 15, fig. 80. 
Sa Genus CONUS, Linn. 
Shell thick, obconic, whorls enrolled upon themselves, the spire 
short, smooth or tuberculated ; aperture elongated, narrow, the 
margins parallel, truncated at the base; the outer lip with a 
slight sutural sinus. 
Section I. MARMORETI. 
Conus (typical) of Mérch and H. and A. Adams. Coronazis, 
Swainson. Rhombus, Montfort. 
C. MARMOREUS, Linn. PI. 1, figs. 1-5. 
White or light pink-white, with chocolate or chestnut reticula- 
tions, so arranged as to expose the white in rounded triangular 
large spots; aperture white or light pink. Length, 4-5 inches. 
Indian Ocean, Japan, Australia, Polynesia, ete. 
The barbed teeth of this species inflict severe wounds. 
