﻿Vol. 6 1.] TERTIARY FOSSILS OF SOMALILAND. 165 



Another Naticoid shell, of far larger dimensions than that just 

 described, but probably related to Euspira Jiybrida, is among the 

 specimens obtained by Dr. Donaldson Smith. It consists of a 

 limestone-cast with four whorls, the last being of considerable size 

 and showing a well-defined ' ramped ' area. The basal region 

 appears to have been removed by longitudinal splitting or weather- 

 ing, so that a flat surface only is seen, representing a section with 

 a large central umbilical space. The spiral diameter of this speci- 

 men measures 125 by 95 millimetres. 



In a microscope-slide of the matrix, Opercalina, Amp7iistegina,etc. 

 are seen to enter largely into its minute structure (see § M in the 

 Notes on the Eoraminiferal Structures, p. 176). 



Locality. — Near Berbera. 



Collector. — Dr. Donaldson Smith. Presented to the British 

 Museum (Natural History) by the Gaekwar of Baroda. 



Matrix. — Cream-coloured limestone. 



Solarium cf. canaliculattjm, Lamarck. (PI. XIX, figs. 5 & 6.) 



Solarium canalictilatum, Lamarck, Ann. Mus. Hist. Nat. Paris, vol. iv (1804) 

 p. 53; Deshayes, ' Description des Coquilles Fossiles des Environs de Paris' 

 vol. ii (1832) p. 220 & pi. xxiv, figs. 19-21 ; J. de C. Sowerby, ' Mineral Con- 

 chology ' vol. vi (1826) p. 43 & pi. dxxiv, fig. 1. 



Eepresented by two weathered limestone-specimens, in the collec- 

 tion formed by Major Leckie, which mostly agree in shape, sculp- 

 ture, and size with this well-known European Eocene shell. The 

 granulose spiral lines of the upper surface, as well as those of the 

 basal region, are well defined, although probably more regular than 

 in the type. 



Dimensions in millimetres. 

 Height (probable) = 8 | Diameter of the base =10 



One of the specimens is associated in the same matrix with 

 Liotina somaliensis and a coral, probably Cdlamophyllia Aylmeri of 

 Gregory ; while the other example occurs with an Astartiform shell 

 of doubtful determination. 



Locality. — Top of Garrasgooi Mountain, 5200 feet above sea^ 

 level, south-west of Upper Sheikh. 



Collector. — Major E. G. Edwards Leckie. 



Matrix. — Heavy, compact, cherty limestone, of reddish colour 

 externally. 



Liotina somaliensis, sp. nov. (PI. XIX, fig. 7.) 



Shell small, turbinate, summit depressed ; whorls convex, deeply 

 sutured, and ornamented with an elevated trellised sculpture, 

 composed of numerous longitudinal and spiral costae, forming regular 

 quadrangular spaces. Margin of aperture thickened, varixed, and 

 reflected. Basal characters not seen. 



Dimensions in millimetres. 

 Height = 12 I Diameter = 12 



