PHYLLOBRANCHIA., TURBONID®. | ey 
deaux, Esq. ; it was afterwards found by Mr. J. Cranch in the 
Plymouth Sound and at Torquay. 
3. ScALARIA TREVELYANA. Tab. IX. fig. 10. 
S. testa rufescente-brunnea, costis angustissimis. 
Habitat in mari prope Hartlepool in provincia Durhamensi. 
Mus. Trevelyan, Dr. Goodall, et nostr. in Mus. Brit. Alt. 
$ unc. 
Shell reddish-brown, its ribs very narrow. Height six- 
eighths of an inch. 
Tnhabits the sea near Hartlepool in Durham. 
This new species was found on the shore a little south of 
Hartlepool, by W. C. Trevelyan, Esq., to whom I am indebted 
for my specimens. 
4. SCALARIA CLATHRATULUS. 
S. testa nivea, costis plurimis angustissimis. 
Turbo clathratulus, Walker, Test. Min. Rar. f. 45; Adams, 
Micros. t. xiv. f. 19; Mont. Test. Brit. 297; Flem. Edinb. 
Encycel. vu. 75 ; Dill. Desc. Cat. 781; Turt. Conch. Dict. 
208. sp. 37. 
Turbo clathrus 6, M. §& R. Trans. Linn. Soc. viii. 171. t. v. f. 1. 
Habitat in Danmoniz et Cornubiz Australis mari profundo 
arenoso, rarius. Alt. 2 unc. 
Shell snowy-white, its ribs very many and very narrow. 
Height three-eighths of an inch. 
Inhabits the deep sea in sandy bottoms, on the southern 
coasts of Devon and Cornwall, rather rarely. 
Genus 70. TuRRITELLA. 
Turritella, Lamarck, Cuvier. 
Turbo, Auctorum. 
Testa altissimé turrita. Sutura profunda. Apertura ro- 
tunda, integra. Peritrema emarginatum. Operculum corneum. 
Animal ore non valdé elongatum, cylindricum. Tentacula 
brevia, obtusiuscula. Pes crassus, brevis. 
