1881.] SOCOTRAN LAND-SHELLS. 811 



and rather rapidly tapering at the fifth whorl ; suture shallow, ad- 

 pressed ; whorls 10, somewhat convex; aperture elongately oval, 

 subvertical ; peristome thin ; columellar margin thin, straight. 

 Size : — 



Major diam. 0-34, alt. axis 0'97, alt. apert. 0*27 inch. 

 „ „ 8-5, „ 24-8, „ 7-0 miliim. 



Locality. [This shell I only found in one locality, east of Hadibu, 

 near a place called Adona, altitude over 1500 feet, rock granite. — 

 B. B.-] 



This shell approaches somewhat in its general form to B. magi- 

 lensis, Craven, from Magila, East Africa. 



23. Stenogyra (Subulina?) enodis, n. sp. (Plate LXIX. 

 fig. 5.) 



Shell dextral, elongately turreted, not rimate, very thin, glassy, 

 diaphanous ; no sculpture ; colour milky white ; spire long, apex 

 blunt and rounded, suture moderately deep ; whorls 9, sides convex, 

 regularly increasing ; aperture quadrate, subvertical (not fully formed) ; 

 peristome thin ; columellar margin straight, vertical. 



Size : — 



Major diam. 0"17, alt. axis 0'54, alt. apert. 0'12 inch. 

 „ „ 4-0, „ 13-0, „ 2-8 miliim. 



Locality. [South side of the island, from limestone rocks, altitude 

 1000 feet.— 5. 5.] 

 Only one specimen was found. 



24. Stenogyra (Opeas?) hirsutus, n. sp. (Plate LXIX. 

 figs. 6, 6 a.) 



Shell dextral, elongately turreted, scarcely rimate, covered with a 

 thick epidermis ; sculpture a rough surface with regularly disposed 

 longitudinal lines of fine hairs ; colour dull ochre ; spire elongate, 

 sides flat, apex blunt, suture well impressed; whorls 11, sides 

 slightly convex ; aperture oval, oblique ; peristome thin ; columellar 

 margin thin, slightly reflected. 



Size : — 



Major diam. 0"12, alt. axis 0*45, alt. apert. 0*8 inch. 

 ,, „ 3'0, „ irO, „ 2'0 miliim. 



Locality. [Found underneath granite boulders on hills above 

 Adona, altitude over 2000 feet.— ^. B.^ 



Only one specimen of this beautiful hairy shell was found. 



EXPLANATION OP THE PLATES. 



Plate LXYIH. 



Pig. 1, 1 a. Buliminus {Achafinelloides) socotrensis, Pfr., p. 802. 



2. Buliminus {Achatinelloides) socotrensis, var. elongatics, p. 803. 



3, 3 a. Buliminus {Achatinelloides) hadibuensis, n. pp., p. 803. '6 b, right 



side of base, showing rimation. 



