28 CORALLIOPHAGA. 
former. De Bl. places inthis genus the genera Thalamulus, 
Achelois and Antimomus, Montf. two of which are figured 
Knor. Sup. Fab. iv. f. 1. 1. 8.9. Conilites Pyramidata. Fig. 470. 
CONOHE'LIX. Sw. (Conus and Helix.) The generic name 
given to those species of Mitra which are conicalin form. Fig. 
432. C. marmorata. 
CONOPLAWA. Say. Order. Sessile Cirripedes, Lam. A genus 
composed of Balani, attached to stems of Gorgonia, having their 
bases elongated. Ez. fig. 27. Balanus Galeatus. 
CONO’VULUS. A genus proposed by Lam. to include the small, 
conical species of Auricuna, which have the outer lip simple. 
This was afterwards abandoned by him. Ez. fig. 298. Auricula 
Coniformis. 
CONTINUOUS. Carried on without interruption, as the siphon 
in Spirula; the varices in Ranella, fig. 394, which, occurring ina 
corresponding part of each whorl, form a continuous ridge. 
CONULARIA. 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. Resembling Orthoceras, but wanting the 
siphon. Fig. 469. 
CO'NUS. Auct. (Kevos, acone.) Fam. Enroulées, Lam. Angy- 
ostomata, Bl. Deser. Conical, convolute, with a short spire; 
and narrow lengthened aperture, terminating in 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, itssmooth columella, its narrow aperture, and thin outer 
lip. The form of the spire varies from flat and even partially 
concave, toa regular pyramidal cone; and the upper edges of 
the whorls are rounded in some species, angulated in others, and 
in some are waved orcoronated. We give figures of the prin- 
cipal forms, 459 to 462. 
CON’VOLUTZE. (Enroulées, Lam.) A family of the second 
section of the order Trachelipoda, Lam. containing the genera 
Ovulum, Cypreea, Terebellum, Ancillaria, Oliva, Conus, and 
others, enumerated in explanation of figures 440 to 462. 
CONVOLUTE. (Con, together; and volvo, revolve.) Strictly 
applied to symmetrical shells, signifying that the volutions are 
made parallelly with each other in a horizontal direction, as 
Ammonites, &c.; but the term is also commonly used in de- 
scribing such shells as Conus, in which, the direction of the 
whorls being scarcely oblique, the last whorl almost entirely 
covers the former. This is the case with all Lamarck’s family 
of Enroulées. Fig. 440 to 462. 
CORALLIOPHAGA. Bl. Cypricarpia Corralliophaga, Lam. 
Deser. Oval, elongated, finely striated, from the apex to the base 
