1881.] SOCOTRAN LAND-SHEIiLS. 803 



Var. alba. Among 98 specimens nine were quite plain, but did 

 not differ in any other respect. 



Animal. Many specimens were found to be still alive, and survived 

 some time, but died off gradually. Eye-tentacles moderately long, 

 the oral tentacles long and dark ; animal pale-coloured, foot pointed. 



The odontophore will be figured hereafter with those of other 

 species. 



[This species is very common on trees (Croton, sp. ind.) on the 

 plain of the valley at the mouth of which is the village of GoUonsir. 

 —B. B.] 



2. BULIMINUS (ACHATINELLOIES) SOCOTRENSIS, Vai. ELON- 



GATUs. (Plate LXVIII. fig. 2.) 



Shell rimate, ovately fusiform, very solid; sculpture regular shallow 

 oblique costulation : colour buffy white, the last whorl below 

 obliquely and spirally ornamented with regular umber-brown bands, 

 which on the upper whorls become transverse splashes of colour 

 slightly obhque to the costulation ; spire elongately pyramidal, sides 

 flatly convex ; suture shallow ; whorls 6, sides flat ; aperture ovate ; 

 peristome sharp, only very slightly reflected near the rimation ; colu- 

 mellar margin with a sharp internal fold. 



Size: — 



Major diam. 0*25, alt. axis 0'45, alt. apert. 0"22 inch. 

 „ „ 6'4, ,, irO, „ 5'5 millim. 



Animal. One alive, pale greenish grey ; eye-tentacles short, dark ; 

 a white granular short patch on the fore margin of the foot. 



[On the stems of Braccena growing on limestone at over 2000 feet. 

 —B. B.-] 



This shell is very close to A, socotrensis ; but the form is more 

 elongate, and the distribution of the bands of colour is very different : 

 and it might be mistaken for the young of A. balfoiiri ; but the 

 whorls are flatter. 



3. BULIMINUS (ACHATINELLOIDES) HADIBTJENSIS, U. Sp. (Plate 



LXVIII. fig. 3.) 



Shell elongately fusiform, rather broadly rimate in well-grown 

 shells, closer in the younger specimens, coarse hut regular costula- 

 tion ; colour ochraceous brown with streaks of madder-brown running 

 parallel to the costulation, these again overlaid with minute specks 

 of black, apex nearly black ; spire elongately pyramidal, slightly 

 convex, subacuminate ; suture shallow, adpressed ; whorls G, bodj'- 

 whorl the largest, sides very flatly convex ; aperture ovate, more 

 than half the length of the axis ; peristome with sharp edge, slightly 

 reflected over the rimation, regularly curved on the outer margin ; 

 columellar margin straight, with a slight sinuation within the aperture. 



Longest specimen : — 



Major diam. 0*4, alt. axis 0"85, alt. apert. 0*5 inch. 

 „ 10-2, „ 21-7, „ 12-5 millim. 



52* 



