PHYLLOBRANCHIA. TURBONID. 167 
It is found very rarely in the Salcombe estuary on the south- 
ern coast of Devon. I have heard that it has also been taken 
in Dublin Bay. 
10. TURBONELLA VITREA. 
T. testa glaberrima, nitida, vitrea; anfractibus quinque, tumidis ; 
sutura valdeé distincta. 
Turbo vitreus, Mont. Test. Brit. u.—Suppl. t. xi. f. 3; Flem. 
Edinb. Encycl. vii.; Dill. Desc. Cat. 784; Turt. Conch. 
Dict. 202. sp. 23. 
Helix vitrea, M. § R. Trans. Linn. Soc. vin. 213. 
Habitat in mari Danmoniensi et Caledoniensi et Hiberniensi 
Australi rarits. Mus. Montagu et nost. in Mus. Brit. Alt. 
4 unc. 
Shell very smooth, shining and glassy; with five tumid 
whorls ; the suture very distinct. Height one-eighth of an 
inch. 
Inhabits the sea on the southern coasts of Devon, Scotland, 
and Ireland, and is somewhat rare. I found near Loch Ranza, 
in the Isle of Arran, living specimens ; the epidermis had a very 
slight tint of yellow. 
Genus 72. ALVANIA. 
Turbo, ductorum. 
Testa alté et acuté turrita. Suturaprofunda. Umbilicus 
apertus, perforatus. Apertura feré rotundata, postict ad dex- 
tram tenuiter angulata. Animal incognitum. 
Shell highly and acutely turrited. Suture deep. Umbilicus 
open, perforated. Aperture almost round, the hinder part at 
the right side slightly angulated. Animal unknown. 
Synopsis Specierum. 
1. striata. Testa sordidé alba nitidissim4; anfractibus sex, 
spiraliter striatis. 
2. glabra. Testa alba, glabra; anfractibus quatuor, ultimis ad 
dextram linea sculptis. 
