656 ME. P. CHAPMAN ON KAINOZOIC [Nov. I9II, 



The District of Cyrene. 



'Limestone with echinoid spines, etc. ; Sidi Kof Diasiasia, 

 south-east of Cyrene.' A pale cream-coloured limestone weathering 

 to pink; composed of echinoid-spines and test-plates, and forami- 

 nifera, chiefly nummulites. A slender flexuous variety of N. 

 gizehensis, var. viquesneli De la Harpe, is here common. Also 

 several specimens of Operculina cf. libyca Schwager. 



Horizon. — Lower Eocene to Miocene. 



'Limestone; coastal plain west of Mersa Susa' (No. 92). A 

 dense, cream-coloured nuinmulitic limestone weathering to a 

 reddish colour. The nummulites are beautifully preserved ; they 

 are chiefly N. gizehensis Ehr. and N. curvispira Menegh. There 

 also occurs a very fine median section of a minute nummulite, 

 N. subbeaumonti De la Harpe. 



Horizon. — Middle Eocene. 



' Foraminiferal limestone, 530 feet above the sea, west of Mersa 

 Susa' (No. 95). A dense, cream-coloured limestone, showing 

 cleavage-surfaces of echinoid-plates and spines. A microscopic 

 section reveals a purely organic base of minute foraminifera, cal- 

 careous algae, and shell-fragments, through which are scattered 

 nummulites and echinoid-remains. The nummulites are com- 

 paratively small, thick, and possess a bluntly rounded periphery. 

 They are, in all probability, referable to N. subdiscorbina. 



Horizon. — Middle Eocene. 



' Echinoid-limestone ; 1100 feet above the sea. Platform east of 

 Ain Hafra' (No. 98). A hard, cream-coloured limestone, with 

 ferruginous weathering and many natural sections of Nummu- 

 lites subdiscorbina De la Harpe. A similar rock at the level of 

 1090 feet, north of Cyrene, includes N. subramondi De la Harpe. 



Horizon. — Middle Eocene. 



' Fibularia Limestone. Altitude 1215 feet above sea-level. Eoot 

 of Upper Cliff of Cyrene, west of Ain Hafra' (No. 78). Limestone 

 with echinoid-remains, and a small species of Nummulites, cf. 

 JV. curvispira. 



Horizon. — (?) Middle Eocene. 



N. gizehensis var. lyelli, associated with N. curvispira Menegh., 

 occurs in specimens Nos. Cy 84, Cy 86, Cy 88, from the Cyrene 

 escarpment north of Ain Sciahat, at the level of 1560 feet and a 

 little below that. 



Horizon. — Middle Eocene. 



' Marly limestone with Clypeaster. East of camp at Ain 

 Sciahat' (No. 187). — A calcareous marl, containing numerous tests 

 of Operculina libyca Schwager. A similar marl from above the 

 camp at Ain Sciahat (No. 188) is full of Nummulites subramondi 

 De la Harpe. 



Horizon. — Lower Eocene to Miocene. 



This specimen also yielded Bolivina textilarioides Reuss, and 

 Pulvinidina Icarsteni Reuss. 



