270 MOLLUSCA. 
Figures 339, 339 a, ventral and dorsal views of the shell, magnified 
two diameters ; 339 6, natural size. 
CoLUMBELLA MENDICARIA (LiN.), Lamarck; Anim. sans Vert., x. 
272. Sowersy; Genera of Shells, f. 4. Kizner; Iconog., pl. 6, f. 1. 
Antat above dark reddish-brown, with a few whitish annulations 
on the siphon, and a yellow stripe on the mantle corresponding to the 
yellow band on the shell; plantar surface sulphur yellow, greenish at 
tip and somewhat dotted transversely at the margin. Operculum 
chestnut-coloured. 
Figure 341, animal as in crawling ; 341 a, locomotive disk. 
CoLUMBELLA LiGuULA (Ductos), Monog., pl. 11, f. 11-16. SoweErsy ; 
Thes. Conch., pl. 38, f. 83-85. 
AnimaL very pale cream-coloured, with very faint, slate-coloured, 
submarginal dottings. 
Figure 342, animal in the posture of motion. 
The animal of the genus CoLumMBELLA is long and slender, with a 
long, siphonal tube; foot folding longitudinally, obtusely pointed 
behind, anteriorly a little dilated, with a transverse marginal fascia ; 
head small, protruding beyond the foot; tentacles short, subulate, the 
eyes midway, below which is a dilatation. Operculum none. 
It is as closely allied to the animal of Mitra as possible, in external 
form. ‘The foot may be a little more dilated anteriorly, and there is a 
minute operculum to Mitra, while there is none to Columbella. Conus 
is equally closely allied. 
Mirra VITELLINA (Gould). 
T. lanceolata, solida, dilute aurantia maculis albis fasciata, sulcis 
linearibus ad quindecim lirata et stris tenuibus crebris cincta ; inter- 
sectionibus punctatis ; spira elevata, anfractibus octo ad novem planis, 
