﻿Vol. 6 I .] THE TERTIARY FOSSILS OF SOMALILAND. 155 



10. The Tertiary Fossils of Somaliland, as represented in the 

 British Muse dm (Natural History). By .Richard Bullen 

 Newton, F.G.S. (Read June 22nd, 1904.) 



[Plates XV1I-XXL] 



Contents. 



Page 



I. Introduction 155 



II. Literature 158 



III. Description of the Fossils : — 



(a) Gastropoda 160 



(b) Larnellibranchia 166 



(c) Echinoidea ... 173 



(d) Actinozoa (Corals) 174 



IV. Notes on the Foraminiferal Structures in the Tertiary Limestones 



of Somaliland 175 



Y. List of the Tertiary Fossils from Somaliland 177 



I. Introduction. 



Since the publication in the fifty-sixth volume of this Journal (1900) 

 of Prof. J. "W. Gregory's paper on the Geology of Somaliland, which 

 was founded upon specimens in the British Museum (Natural History) 

 mostly collected and presented by Mrs. Lort-Phillips, the National 

 Collections have been enriched by two further series of fossils from 

 the same country — that obtained by Dr. Donaldson Smith from the 

 neighbourhood of Berbera, and presented by His Highness the 

 Gaekwar of Baroda ; the other presented by Major E. G. Edwards 

 Leckie (of the Canadian Mounted Bines), and collected by him during 

 an exploration-tour, from Upper Sheikh and Garrasgooi in the Golis- 

 Kange district, and also from the Eilo liange of mountains. 



In the course of my official duties at the British Museum, I have 

 been entrusted with the examination of these new collections, 

 with the view of describing the individual specimens, as well as 

 of ascertaining their importance with regard to the stratigraphy of 

 the country. 



In carrying out this work, a large amount of comparison with 

 species already known from Somaliland and elsewhere has been 

 imperative, while the limestone-matrices surrounding the different 

 specimens have been microscopically examined in several cases, in 

 order that the best confirmatory evidence should be obtained as to 

 geological horizons. This examination has rendered necessary a 

 revision of some of the geological and palaeontological conclusions 

 referred to in Prof. Gregory's memoir, for which I am largely respon- 

 sible in connection with the determination of certain molluscan 

 remains therein mentioned. The new material before us is, generally 

 speaking, better preserved than that dealt with previously, and 

 especially does this remark apply to the mollusca. There are good 



