PHYLLOBRANCHIA. TURBONIDZ. 172 
3. Clelandianus. Testa tenuitér crassa; anfractibus lineis spi- 
ralibus elevatis, inter suturas parvis aut obsoletis sculptis. 
4. ziziphinus. Testa crassi; anfractibus lineis spiralibus 
irregulariter latis, glabris, elevatis, obliqué  striolatis 
sculptis. 
5. irregularis. Testa crassa; anfractibus lineis spiralibus, 
irregularibus, elevatis, non tuberculatis nisi in suturis 
sculptis. 
6. discrepans. Testa crassa; anfractibus sulco mediano lato, 
et lineis impressis, angustissimis sculptis. 
1. TROCHUS PAPILLOSUS. 
T. testa tenui, fragili; anfractibus lineis spiralibus, regularibus 
tuberculatis, elevatis sculptis. 
Trochus papillosus, Gualt. Test. t. lxi. f. G. M; Da Costa, 
Brit. Conch. 38. t. mi. f. 5, 6; Chem. Conch. v. t. elxvi. f. 
1597, 1598?; Donov. Brit. Shells, t. x. f. 3; Flem. Edinb. 
Encycel. vii. 75; Dill. Desc. Cat. 787; Turt. Conch. Dict. 
10} t. xiv. 5. 
Trochus fragilis, Pult. Cat. Dorset. 44. t. xvi. f. 5. 
Trochus tenuis, Mont. Test. Brit. 275. t. x. f. 3. 
Habitat in mari Danmoniensi Australi profundo. Testze color 
albus aut rosaceus, plus aut minus roseo variegatus. In ex- 
emplis hujus speciei nonnullis testee lmeze non sunt tuber- 
culate. 
Shell thin, fragile, with the whorls sculptured with regular, 
spiral, tuberculated, elevated lines. Colour entirely white or 
rosy, more or less variegated with rose red. Height an inch 
and a half. 
In some examples of this species, the lines of the shell are 
not tuberculated, and as every intermediate variation occurs, 
proves it to be but a variety of this species. 
Inhabits the deep sea, on the southern coasts of Devon, and 
is by no means uncommon. 
2. TRocHus CRANCHIANUS. 
T. testa tenui; anfractibus lineis spiralibus, distantibus, ele- 
vatis, simplicibus sculptis. 
12 
