OCR Text |
Show 1881.] SOCOTRAN LAND-SHELLS. 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 Gollonsir. -B. £.] ° 2. BULIMINUS (ACHATINELLOIES) SOCOTRENSIS, var. ELON-G A T U S . (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 oblique 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 ; columellar margin with a sharp internal fold. Size:- Major diam. 0*25, alt. axis 0*45, alt. apert. 0*22 inch. » )> 6'4, ,, 11*0, ,, 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 Dracana 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. Balfouri; but the whorls are flatter. 3. BULIMINUS (ACHATINELLOIDES) HADIBUENSIS, n. sp. (Plate LXVIII. fig. 3.) Shell elongately fusiform, rather broadly rimate in well-grown shells, closer in the younger specimens, coarse but regular costulation ; 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 6, body-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* |