Zoological Society, ^§7 



This shell has the base of the columella stained with rose-cojour, 

 like the Trochus rhodostoma, Lamarck ; there is no danger, however, 

 of confounding it with that species ; the under surface of the Trochus 

 asteriscus is most elegantly serrated, the serrae ranging round with 

 peculiar regularity ; and the periphery of each whorl extends into 

 large hollow spouted scales. The shell figured in * Conch. Syst.,' at 

 fig. 5 of the same plate, under the name of Trochus pileolum, appears, 

 by a figure subsequently published in Delessert's ' Recueil de Co- 

 quilles,' to be the Trochus jimhriatus of Lamarck. 



Trochus gemmosus. Troch. testd parvd, conoided, luteo et violaceo 

 vivide variegatd ; anfractihus leviter convexis, superficie ubique 

 granulatd, granulis obtusis, quasi gemmosis ; infimd facie similiter 

 ornatd. 

 Reeve, Conch. Syst., vol. ii. pi. 218. f. 9. 

 Alt. |; diam. | poll. 



Hab. ? Mus. Stainforth. 



This is a most lovely shell to look upon ; it is richly variegated 

 with violet and yellow, and the surface being obtusely granulated, 

 gives it the appearance of being studded with gems. 



Trochus Hanleyanus. Troch. testd acute conicd, viridi, levis^ 

 sirrie nodulosd ; anfractibus planiuscuUs , peripherid ultimi acuta; 

 infimd facie roseo-tinctd, minutissime serratd, serris regularibus, 

 seriatim dispositis, umbilico parvo. 

 Reeve, Conch. Syst., vol. ii. pi. 218. f. 11. 

 Alt. 1|; diam. 1^ poll. 



Hab. ? Mus. Cuming. 



By the above title I wish to keep in remembrance the name of my 

 industrious friend Sylvanus Hanley, Esq. 



Trochus modestus. Troch. testd conoided, roseo-aurantid, tuber- 

 culiferd, subsquamosd ; anfractibus convexis, tuberculis squamcB' 

 formibus, irregularibus , in medio biseriat\m cinctis ; umbilico tecto ; 

 basi aurantid. 

 Reeve, Conch. Syst., vol. ii. pi. 218. f. 14. 

 Alt. if; diam. 1 j poll. 

 Hab. — . — ? Mus. Cuming. 



This shell, which is of a peculiar rose-tinted orange- colour, has 

 each whorl encircled with a double row of irregular scale-like tuber- 

 cles. 



Trochus eximius. Troch. testd conico-pyramidali, pallide carneold, 

 lineis transversis interruptis sparsim ornatd; anfractibus supern^ 

 concavis, in medio depresso-planis, bifuniculatis , funiculis albo- 

 nigroque tessellatis ; umbilico tecto. 

 Reeve, Conch. Syst., vol. ii. pi. 218. f. 12. 

 Alt. I ; diam. J poll. 

 Hab. ad Payanam. Mus. Cuming. 

 Dredged from sandy mud at the depth of ten fathoms. 

 Trochus melanostoma. Troch. testd depresso-conicd, cinereo- 

 violaced, fauce nigerrimd, anfractibus concaviuscuUs, marginibus 

 acutis, infimd facie circulariter tceniatd; umbilico tecto. 



