57 

 ON SOME LAND SHELLS FROM SOMALILAND. 



By EDGAR A. SMITH, F.Z.S., 

 British Museicni (Natural History), London. 



A few shells collected in Somaliland by Dr. Donaldson Smith have 

 recently been presented to the British Museum by His Highness 

 the Gwaekwar of Baroda. They include two new forms and an 

 interesting series of BuUminus revoili and Otopoma iwirieri. 



1.— Buliminus revoili (Bourgiiignat). 



Limicolaria revoili, Bourguignat in Revoil's Faune et Flore des 

 pays Comalis, p. 42, pi. ii, figs. 24 — 26. 



Btdiminus (Rachis) moreletianus, Ancey : Naturalist. Sicil., 1882, 

 vol. i, p. 206. 



Hah. — Lugat, 4300 feet. 



This species is very closely related to the Arabian B. alhatus, Fer., 

 indeed it is chiefly distinguished by a difference in the colour-mark- 

 ings, being longitudinally striped with light and dark brown, whereas 

 alhatus usually exhibits two transverse interrupted brown bands round 

 the middle of the body-whorl. Three specimens of the latter species 

 in the Museum, however, lack these bands, having instead the lower 

 part of the body-whorl faintly streaked with brown longitudinally, 

 otherwise being pure white throughout. AL Bourguignat describes 

 this species as " valide cosfafa," whilst M. Ancey characterises the 

 whorls as " suhohliquis confertisque striis sculptis." The latter descrip- 

 tion is certainly the more applicable to the majority of specimens, 

 indeed I have only seen two collected by Messrs. T. L. and W. D. 

 James in the interior of the country and by them presented to the 

 Museum, which might be said to be costate. 



These two examples are also almost exactly similar in shape to B. 

 alhatus, the whorls being, however, perhaps in the slightest degree 

 more convex. 



M. Ancey appears to have rejected the specific name suggested 

 by Bourguignat merely because the latter placed it in Limicolaria, a 

 generic position which, as pointed out by Ancey, is evidently incorrect. 



2.— Otopoma (Georgia) poirieri, Bourguignat. 

 Otopoma poirieri, Bourguignat: Moll. Afrique, 1881, p. 6. 

 Georgia poirieri, id. in Revoil's Faune et Flore des Pays Comalis, 



p. 74, pi. iii, figs. 54—56- 

 Hah. — Ogardain, Central Somaliland (F. L. and W. D. James and 



E. Lort Phillips in Brit. Mus.) ; INIorobyeh, Megag, Shake 



Abacodley, and Lugat (D. Smith). 



