804 LiEtJT.-coL. H. H. GODWIN-AUSTEN ON [June 21, 



Shortest specimen : — 



Major diam. 0-36, alt. axis 0-77, alt. apert. 0-44 inch. 

 „ 9'0, „ 197, „ U-2 millim. 



[Most abundant on the trees upon the plain in the vicinity of 

 Hadibn, on a Croton, which was the commonest undershrub. — B. 2?.] 



This shell is closely allied to A. balfouri ; but it may be known at 

 once by its more elongate form, coarser sculpture, and elaborate 

 ornamentation. 



4. BULIMINUS (ACHATINELLOIDES) HADIBUENSIS, Var. ALBA. 



(Plate LXVIII. fig. 4.) 



Pure white. I give a figure of the base, right side, showing the 

 rimation ; but its narrowness is, I think, due to immaturity, and 

 not of much value. 



Major diam. 0"3G, alt. axis 0*82, alt. apert. 0*42 inch. 

 „ 9-0, „ 21-0, „ 10-5 millim. 



This shell is very close to A. hadibuensis ; but the sculpture is not 

 so coarse. 



Var. minor has splashes of pale brown upon the whorls, and 

 measures : — 



Major diam. 0'48, alt. axis 0-13 inch. 

 „ 12-0, „ 3-3 millim. 



5. BULIMINUS (ACHATINELLOIDES) BALFOUBI, n. Sp. (Plate 



LXVIII. fig. 5.) 



Shell narrowly and deeply riniate, ovately fusiform, solid ; sculp- 

 ture regular close oblique costulation ; colour generally wliite, with 

 a few dark distant longitudinal splashes on the four apical whorls ; 

 spire elongately conoid, sides convex, apex moderately sharp, suture 

 shallow ; whorls 7, last the largest, sides convex ; aperture elongately 

 ovate, nearly half the length of the shell, with a strong callus on the 

 body-whorl in many specimens ; peristome sharp, straight on the 

 outer margin ; columellar margin straight, reflected over the rima- 

 tion, with a well-marked internal fold. 



Longest specimen : — 



Major diam. 0-39, alt. axis 0-83, alt. apert. 0-39 inch. 

 „ „ lO-O, „ 21-5, „ lO'O millim. 



Shortest specimen : — 



Major diam. 0*38, alt. axis 0-68, alt. apert. 0*38 inch. 

 „ „ 9*5, „ 17'8, „ 9-5 mihim. 



Animal pale ochraceous, with minute speckling of brown ; tentacles 

 pale, elongate, attenuate, pointed. In some the head is mottled dark 

 olivaceous ; no pallial line. 



Locality. General all over the island. 



