7 
3. Monocrapus or E:tosium AND MreLAmpus, TWO GENERA 
or Putmonirerovus Mouuvsca. By H. ann A. ApAms. 
Genus Exxiosivum, Bolten. 
Head ending in a snout; tentacles subcylindrical ; eyes situated 
at their inner bases. Pulmoniferous; respiring free air. Living on 
the land. 
Shell oblong-oval, covered with a brown epidermis; spire short, 
obtuse ; aperture narrow, elongated ; inner lip with 2-3 large ante- 
rior plaits ; outer lip thickened internally. 
Otis, Humph., not Linn.—Auricula, Lamk., not Klein.—Auricu- 
lus, Montf.—Marsyas, Oken.—Geovula, Swains. 
The animals of this genus resemble in their habits those of Pythia, 
Bolten (Scarabus, Montfort), living in salt marshes and mangrove- 
swamps. 
1. Extosium auris-Mip#, Linnzeus. 
Voluta auris-Mide, Linn. Syst. Nat. ed. 12, p.1186.—Helizx auris- 
Mide, Mill. Verm. p. 118. no. 311.—Bulimus auris-Mide, Brug. 
Dict. no. 76.—Auricula Mide, Lamk. Hist. viii. p. 323. 
2. Extosium Auris-Jup#, Linneus. 
Voluta auris-Jude, Linn. Syst. Nat. ed. 12, p.1187.—Heliz auris- 
Jude, Mill. Hist. Verm. p,109. no.310.—Bulimus auris-Jude, Brug. 
Dict. no. 78.—Auricula Jude, Lamk. Hist. viii. p. 324.—Auriec. 
protracta, Beck, Ind. (var.).—Auric. densata, Beck, Ind. (var.).— 
Aurie. reticulata, Anton, Cat. (var.). 
3. ELLoBIUM SUBNODOsUM, Metcalfe. 
Auricula subnodosa, Metc. Proc. Zool. Soc. 1851 ; Ann. and Mag. 
Nat. Hist. ser. 2. p. 67 (1853). 
4. Exttosium pouitum, Metcalfe. 
Auricula polita, Mete. Proc. Zool. Soc. 1851; Ann. and Mag. Nat. 
Hist. ser. 2, p. 67 (1853). 
5. E,tosium SHEEPMAKERI, Petit. 
Auricula Sheepmakeri, Petit, Journ. de Conch. i. p. 404. 
6. ELLospium GRANULINUM, Mihlfeldt. 
Auricula granulina, Mihlf. Anton, Verzeich.— Auric. stagnalis, 
Petit, Guér. Mag. 1835, p. 23.—Auric. papillifera, Kiist. Chemn. 
Conch. Cab. (Auric.) p. 25. tab. 3. f. 9, 10. 
7. ELLOBIUM TORNATELLIFORME, Petit. 
Auricula tornatelliformis, Petit, Ann. Nat. Hist. xii. p. 437; Proc. 
Zool. Soc., Dec. 1842. 
8. ELLoprumM PALLIDUM, Sowerby. 
Auricula pallida, Sow., Beechey’s Voy. (Moll.) t. 38. f. 27; Kiist. 
Chemn. Conch. Cab. (Auric.) p. 51. tab. 7. f. 8. 
