PROSOBRANCHIATA. 187 
Family—Con1v. 
Genus 25th. Conus. Linn. 
Conus Brug.; Lamarck ; Cuvier ; De Blainv. 
Votuta, Browne (not Linn.), 1756. 
Srrompus, Adan. (not Linn.), 1757. 
Cucutius, Bolten, 1798. 
Conartius, Dumér., 1806. 
Ruomsus, Montfort, 1810. 
Conutts, Rafin. (not Fitzing.), 1814. 
PunctTicuLis—CoronaxIs—ConiLituHeEs, Swains., 1840. 
StrepHanoconus, March, 1852. 
CYLINDRELLA, Swains. (not Pfeiffer), 1840. 
Dernproconus, J6. 1840. 
Lirnoconus, Mirch, 1852. 
CyuinpeEr, Montfort, 1810. 
Textrtia, Swains., 1840. 
Hermes, Montfort, 1810. 
THELICONUs, Swains., 1840. 
Leproconus, Jd. 1840. 
Ruizoconus—CueEtyconvs, Moreh, 1852. 
Sect. a Nupecua, Klein, 1753. 
Routus, Montfort, 1810. 
Urricuius, Schum., 1817. 
TULIPARIA, Swains., 1840. 
Sect. 6 Conorsis, Ib. 1840. 
Gen. Char.—Shell inversely conical, turbinate, rarely ventricose, smooth or con- 
centrically furrowed or striated; spire truncate, short, or more or less elevated ; whorls 
numerous, coronated or simple; aperture linear, narrow, slightly effuse, and emarginate 
in front ; outer lip thin, and sharp at the edge, smooth, sometimes thickened within, 
generally straight, occasionally curved, notched at the suture; columella straight, 
smooth, truncate in front; covered with an epidermis, and operculated; operculum 
small, corneous. 
In the genera which constitute the families Cypreide and Volutide, the animals 
are distinguished by their large mantles, capable, as we have seen, of great extension. 
In the present genus, the type of the family to which its name is given, the animal is 
furnished with a narrow mantle, prolonged in front into a short, fleshy siphon, resem- 
bling that of the Volutes and Mitres, by which water is conveyed to the branchial 
chamber. The head is small, and carries two subulate tentacles, near the free extre- 
mities of which the eyes are placed: it terminates in a retractile, proboscis-like muzzle, 
