ELLOBITM. 



23^ 



Shell with the inner lip plicate ; outer lip thickened or 

 expanded. 



Genus ELLOBIUM, Bolten. 



Mantle-margin thickened ; foot simple. 



Shell oblong-oval, covered with a brown epidermis ; spire 

 short, obtuse ; aperture narrow, elongated ; inner lip with 

 two or three large anterior plaits ; outer lip thickened in- 

 ternally. 



Syn. Auricula, Lam. Otis, Humph., not Linn. Au- 

 riculus, Mont/. Marsyas, Oken. Geovula, Swains. 



Ea\ E. subula, Quoy and Gaimard, pi. 82, fig. 1. Shell, 

 E. auris-Midre, Linnaeus, fig. 1, a. 



The species of this genus inhabit salt marshes and the 

 mouths of rivers, where they crawl on the damp mud-banks 

 and among the tangled roots of the Mangrove trees ; they 

 are principally found in tropical countries, and more espe- 

 ciallv in the Eastern Hemisphere, being most numerous in 

 Borneo, Malacca, the Philippine Islands, and Australia, 

 while a few only are found in West Columbia and the South 

 Sea Islands. 



Species of Ellobium. 



auris-Judse, Linn. 

 auris-Malchi, Midi. 

 auris-Midse, Linn. 

 Boltenianum, Phil. 

 Brownii, Phil. 

 Chinense, Pfeiff. 

 dactylus, Pfeiff. 

 Dunkeri, Pfeiff. 

 elongatum, Parr. 

 Gangeticum, Bens. 

 incrassatum, H. and A. Adams. 



Morchi, Mke. 



Oparicum, H. and A. Adams. 

 oryza, H. and A. Adams. 

 pallidum, Soiv. 

 pelluceus, Mke. 

 politum, Metcalfe. 

 pusillum, H. and A. Adams. 

 saccatum, Pfeiff. 

 semiplicatum, //. and A. Admit s 

 seuiisculpturn, H. and A. 

 Adams. 



VOL. II. 



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