198 PHYLLOBRANCHIA. TURBONID. 
Helix margarita, Mont. Test. Brit. Suppl. 143; Laskey, Mem. 
Wern. Soc. i. 408. t. viii. f.5; Flem. Edinb. Encyel. vii. 
81; Dill. Dese. Cat. 782. 
Turbo margarites, Turt. Conch. Dict. 229. 
Habitat in mari Danmoniensi Australi et in mari Caledoniensi 
Boreali. Alt. 2 unc. 
The shell white, tinted with bronze, with five whorls, the 
basal one with a fuscous band. Height one-eighth of an 
inch. 
Inhabits the sea on the southern coasts of Devon and in the 
northern Scottish sea. Discovered by Captain Laskey. 
Genus 89. ZEANOE. 
Turbo et Helix Auctorum. 
Testa spiralitér elevata, apice mammillata. Sutura pro- 
funda. Apertura ovata. Peritrema crassum, perfectum, pos- 
tice rectum. 
Animal incognitum. 
The shell spirally elevated ; its apex mammillated; its su-, 
ture deep ; its aperture oval; its peritreme thick, perfect, and 
straight behind. 
Animal unknown. 
ZEANOE NITIDA. 
Z. testa albid& aut cornea, leevi, nitida, tenui, pellucida; an- 
fractibus tribus, perfectis, transversim costatis. 
Turbo nitidus, ddams, Trans. Linn. Soc. t. 1. 65 ; Turt. Linn. 
iv. 487. 
Helix truncatula, Gmel. Syst. Nat. 3659. 
Turbo truncatus, Mont. Test. Brit. 300. t. x. f. 7. 
Habitat in mari Dorsettensi et Danmoniensi haud infrequens. 
Mus. Montagu in Mus. Brit. Alt. } vel 3; une. 
Shell whitish or horny, smooth, shining, thin, transparent, 
with three perfect whorls transversely ribbed. Height one- 
eighth or one-sixteenth of an inch. 
Inhabits the shores of Dorsetshire and Devon, and is not 
very rare. 
