203 
oblonga, dorso elevatd, convexd, albidd, fusco pallide variegatd, 
lineis elevatis striisque concentricis obsolete decussatd, antice 
angustd, productd, lateribus planulatis, extremitate posticd ro- 
tundatd, elevatd ; margine valde sinuatd ; foramen perlongum, 
triangulare, posticé dilatatum. 
Hab. in littoribus Australie. (Mus. Cuming.) 
8. Macrocuisma AncustaTa, A. Adams. UM. testd angustié, 
oblongd, dorso elevatd, utrinque rotundatd, albidd, lineis fuscis 
maculisque rufo-fuscis pictd et tessellatd, costellis obtusis sub- 
rugosis, lineisque depressis, coneentricis, subdistantibus, sculptd, 
extremitate posticd elevatd, margine sinuato; foramen mag- 
num, elongatum, subtriangulare, postice dilatatum, excava- 
tum. 
Hab. ? 
3. A MonocrapH or Moputus, A GENUS OF GASTEROPODOUS 
Mottusca, oF THE FAMILY LitrorINIDZ. By ARTHUR 
Apams, R.N., F.L.S. 
Moputvs, Gray. 
Animal with the head proboscidiform, the tentacles tapering, with 
the eyes near their distal ends. Foot small, the sides simple, without 
lobes or filaments. Operculum thin, horny, orbicular, paucispiral. 
Shell globose or conical, whorls nodulous ; aperture round, or qua- 
drangular, not pearly within ; columella anteriorly with a prominent 
lamelliform tooth ; umbilicus more or less open. 
Modulus, Gray.—Turbo, sp. Adanson—Monodonta, sp. Lamek.— 
Monodonta, Swains.—Morulus, Reeve. 
The aperture of the shell not being pearly within, and the animal 
being destitute of eye-peduncles, head- and foot-lobes or filaments, at 
once distinguishes this genus from Monodonta, and removes it from 
the family Trochide. 
1. Mopvutus Lenticuaris, Chemnitz. 
Trochus lenticularis, Chem. Conch. 5. t. 171. f. 1665. 
Trochus modulus, Linn. Gmel. 
Hab. Mexico. (Mus. Cuming.) 
2. Moputus Tectum, Gmel. 
Trochus tectum, Gmel. p. 3569. no. 16. 
Monodonta retusa, Lamek. Encyclop. 
Hab. Siquejar, Philippines; H.C. (Mus. Cuming.) 
3. Moputus carcHepDonicus, Lamck. 
Monodonta carchedonicus, Lamck. Hist. An.s.Vert. tom.vii. p. 33; 
Chem. Conch. 10. t. 165. f. 1583, 1584. 
Monodonta Sayii, Nuttall. 
Hab. Atooi, California; Nuttall. (Mus. Cuming.) 
