coNus. 123 



composed of Balani, attached to tlie stems of G-orgonia, having 

 their bases elongated. Ex. Balanus Graleatus, PI. i. fig. 27. 



CONOPLEUEA. Hinds, Voyage of the Sulphur. P. 24, pi. vii 

 fig. 223. Described as "coniform, or involute, with the spire 

 conically elevated, with a deep posterior sinus, the edge of which 

 is callous ; outer lip smooth, columella rather lengthened ; 

 aperture linear ; scarcely any canal." (Translated.) Eemarkable 

 for the series of fossils formed by the successive elevations of the 

 edge of the sinus at the suture. Only one species is kno^^Ti, Ex. 

 C. strians, PL xxviii. fig. 596. 



COJS"OEBIS. Swainson, A genus composed of species of Contjs, 

 such as C. dormitor, (Sowerby, gen. fig. 8) which have elevated 

 spires and the upper part of the outer lip deeply sinuated. Mr . 

 Swainson considers these fossil species as analogous to the 

 Pleurotomse. Sw. Lard. Cyclop. Malac. p. 312. 



CONOVULTJS. Lamarck, 1812. Melamptjs, Montfort, 1810, 

 Conical species of Auricula, which have the outer lip simple. 

 Ex. fig. 298, Auricula coniformis. 



CONTIGUOUS. A term applied to the whorls of spiral sheUs 

 when they rest upon, or touch each other. This is the case in 

 a great majority of instances. When, on the contrary, there is 

 a space between the whorls, they are said to be non-contiguous, 

 detached, or free. Examples of non-contiguous whorls are to be 

 seen in Scalaria, fig. 351 (in this case, the distance between the 

 whorls is small), and in Crioceratites, fig. 482. A" Columella 

 contiguous to the axis" is when in the centre of the shell and 

 takes the place of the imaginary line which forms its axis. 

 ' CONTINUOUS. Carried on without interruption, as the siphon 

 in Spirula, the varices in EaneUa, fig. 394, which, occurring in 

 a corresponding part of each whorl, form a continuous ridge. 



CONULAEIA. Miller. A genus of Orthocerata, described as 

 conical, straight, or nearly so, divided into chambers by imper- 

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

 surface finely striated. Eesembling Orthoceras, but wanting 

 the siphon. PL xxii. fig. '449. 



CONUS. Linnaeus. {Kwvoq, a cone.) Fam. Enroulees, Lam. 



