120 CONVOLUTE. 



septa ; aperture half closed ; apex solid, obtuse ; external surface 

 finely striated. Resembling Orthoceras, but wanting the siphon. 

 Fig. 449. 



CONUS^ Auct. (Kwvoc, a cone.) Fam. Enroulees, Lam. Angy- 

 ostomata, Bl. — Descr. Conical, convolute, with a short spire, 

 consisting of numerous whorls ; and narrow lengthened aperture, 

 terminating in a slight emargination at each extremity ; outer lip 

 thin; epidermis thin ; operculum small, pointed, horny. — Obs. 

 This well-known genus of shells is easily distinguished from any 

 other, by its conical form, its smooth columella, its narrow aper- 

 ture, and thin outer lip. The form of the spire varies from flat 

 and even partially concave, to a regular pyramidal cone ; and 

 the upper edges of the whorls are rounded in some species, an- 

 gulated in others, and in some are waved or coronated. The 

 variety of marking and the numerous delicate tints of these shells 

 have caused them to be highly appreciated by amateur collectors ; 

 and many species, as the C. Ammiralis, or admiral ; the C. Gloria 

 Maris, or Glory of the Sea ; the C. Cedonulli (" I yield to none"), 

 and others, have always produced good prices in the markets. We 

 give figures of the principal forms, as expressed in the genera 

 proposed by De Montfort, of Rhombus, Hermes, Rollus and 

 Cylinder, in figures 459 to 462. Many new species were brought 

 to this country by Mr. Cuming, and are represented in parts 24, 

 25, 28, 29; 32, 33, 36, 37; 54, 55, 56, 57; 147, 148; 151 to 

 158 of the Conchological Illustrations, by G. B. Sowerby, jun. 

 See Coronaxis, Swainson. The cones are mostly tropical, some 

 are found as far north as the Mediterranean, and south as the 

 Cape of Good Hope. The most beautiful species are from the 

 East and West Indies. 



CONVOLUTE. (Enroulees, Lam.) A family of the 2nd section 

 of the order Trachelipoda, Lam. the genera of which may be dis- 

 tinguished as follows : — 



1. Cypr^ea. Lips thickened, inflected, with teeth ; spire 

 hidden, including Cypr<eovulum, Luponia, Trivia. Fig. 444 

 to 450. 



