﻿Yol. 6 1.] TERTIARY FOSSILS 01? SOMALILAND. 175 



Collectors. — Mr. F. B. Parkinson (type) and Major It. G. 

 Edwards Leckie. 



Matrix. — Cherty limestone, with external reddish coloration. 



Dendracis sp. 

 Dendracis sp., Gregory, Quart. Journ. Geol. Soc. vol. lvi (1900) p. 38. 



Among Major Leckie"s specimens is a fragment of a Dendracis 

 which agrees with the specimen described by Prof. Gregory, and it 

 is interesting to note it from another locality in Somaliland. 



Localities. — South of Bur Dab (type); Main Golis, 2 miles 

 south-west of Sheikh camp. 



Collectors. — Mr. F. B. Parkinson and Major It. G. Edwards 

 Leckie. 



Matrix. — Cherty limestone, coloured a reddish-brown. 



IV. Notes 02* the Foraminiferal Structures in the Tertiary 

 Limestones of Somaliland. 



The prevailing organism in the Tertiary limestones of Somali- 

 land is Operculina, most probably of the species complanata, as 

 understood by W. B. Carpenter, W. K. Parker, & T. E. Jones. 1 

 Several vertical sections of this form show the bossed character of 

 the margin, as well as the great thickness of the wall of the pen- 

 ultimate chamber, when compared with that of the outer volution. 



There is an apparent absence of Nummulites in all the sections 

 that have been examined, but other genera are observable, especially 

 AmpJiistegina , trochoidal Eotalines, Teootularia, Biloculina, Milio- 

 linae, and Globigerina. An Orbitoid is also present, possessing 

 rectangular chambers in the median plane, which is recognized as 

 Discocyclina cf. dispansa of J. de C. Sowerby, a species originally 

 described from the Nummulitic deposits of Cutch. 2 It is allowed 

 by most authorities 3 on the Foraminifera, that Orbitoids with 

 rectangular chambers are characteristic of the Eocene Period ; this 

 organism is, therefore, of considerable importance in the deter- 

 mination of such an horizon among the Somaliland Limestones. 



The following list includes the principal foraminifera seen 

 in a series of microscope-slides of the Somaliland Limestones, 

 Mr. Eichard Holland having kindly assisted me in the various 

 determinations. The slides are lettered from A to E. 



A. Operculina complanata (Defranee) accompanying Calamopltyllia 

 Aylmeri, Gregory. 



Locality. — Hill about 4 miles south of Camp, Upper Sheikh, at 

 an elevation of over 5000 feet. 



Collector. — Major It. G. Edwards Leckie. 



Matrix. — Cherty limestone, stained externally a reddish-brown. 



: 'Introduction to the Studv of the Foraminifera' (liav Soc.) 18G2. p. 255 

 & pi. xvii, fig. 11. 



2 Trans. Geol. Soc. ser. 2, vol. v (1840) pi. xxiv, fig. lQ = Lycophris dispansus. 



3 See Ch. Sclilumberger, Bull. Soc. Geol. France, ser. 4, vol. iii (1903) 

 p. 273. 



