96 CANTHOEBIS. 



within by transverse ridges ; inner lip spread over part of tlie 

 body wborl, terminating in a straight, thick obtuse columella, 

 with several strong oblique folds. Hub. Indian Oc 3an, C( ast 

 of Africa, America, and "West Indies. Possils found in London 

 Clay and Calc-grossier of Paris. Differing from Turbinellus in 

 form and in the transversely ribbed inside of the outer lip. Fig. 

 315. C. reticulata. — Obs. The latest enumeration of the species 

 of this genus is contained in a catalogue published by Mr. Gr. B. 

 Sowerby, senior, accompanying the author's figures of the new 

 species, amounting to 38. in parts 9 to 13 of the Conchological 

 Illustrations. The greater part of these new species were 

 brought to this country by Mr. Cuming. The monograph sub- 

 sequently published by the author in pi. ix. of the Thesaurus 

 Conchyliorum, contains 68 species. See our plate xviii. fig. 385. 



CANCELLATED. (Erom Cancellatus, cross-barred.) Applied 

 generally to any shells which are marked by ridges crossing each 

 other as CanceUaria, fig. 385. 



CANCILLA. Sw. A sub-genus of Mitrsea, described as having 

 " the whorls crossed by transverse linear ribs ; inner canal want- 

 ing, plates very oblique ; form slender; outer lip thin." Ex. 

 M. Isabella, M. sulcata. 



CANCEIS. Montf. Ceepidulina, B1. A genus of microscopic 

 Eoraminifera. 



CANOPUS. Montf. A genus of microscopic Eoraminifera. 



CANTHAPLEUBA. Swainson, 1840. Acanthopleuba, Guild- 

 ing, 1835. C. spinosus. fig. 227, and similar species of Chiton. 



CANTHABIDTJS. Montf. 1810. Trochus Ibis, Auct. and 

 analogous species. Elenchus, Humph. PI. xxv. fig. 543. 



CANTHABUS. Montf. A genus of microscopic Eoraminifera. 



CANTHIDOMUS. Swainson, 1840. A sub-genus of Melanop- 

 sis, thus described : " spire generally short ; whorls coronated 

 with spines, or marked with longitudinal ribs ; base obtuse. 

 C. costata, Sow. Gen. f. 3." Melanopsis costata. PI. xiv. fig. 

 315. 



CANTHOBBIS. Sw. A sub-genus of the sub-family Trochinse, 

 Sw. Described as being " nearly disc-shaped : spire but slightly 



