654 ME. E. CHAPMAN ON KAINOZOIC [Nov. I9II, 



(C) FORAMINIEERA, OsTRACODA, and PARASITIC FuNGI from the 



Kainozoic Limestones of Cyrenaica. By Frederick Chapman, 

 A.L.S., F.R.M.S. 



The following report is based on specimens collected by Prof. J. 

 "W. Gregory in Cyrenaica. The principal localities whence the 

 samples came are Derna on the coast, a camp about 5 miles west of 

 Derna, and Ain Sciahat, the site of the ancient city of Cyrene, 

 which is about 2000 feet above sea-level. The specimens range in 

 age from Middle or Lower Eocene to Pleistocene. 



Previous Literature. 



The only necessary reference to literature is the following extract 

 from the late Prof. T. Rupert Jones's ' Catalogue of Fossil Fora- 

 minifera in the British Museum' (1882, p. 45): — 



' Nummulites perforata. Marsa Susa, the ancient port of Cyrene. From 

 strata younger than the Numinulitic bed of Crete referred to further on 

 [p. 48]. Collected by Admiral Spratt.' 



Details of the Rock-Samples. 

 Derna. 

 The specimens from Derna include a consolidated beach-sand with 

 some molluscan shells. This rock is mainly composed of small 

 rolled shell-fragments, which have been cemented by carbonate of 

 lime into a fairly coherent rock. 

 Horizon. — Pleistocene. 



Two specimens collected from the Wadi Derna near the town are 

 pink or cream-coloured nummulitic limestones, having the num- 

 mulites exquisitely preserved, and showing the structure in median 

 sections in a most striking manner. Most of the chambers of these 

 discoidal foraminifera are empty, and the septation is thus clearly 

 shown up to the centre of the test. These nummulites vary from 

 1*5 to 4 millimetres in diameter. The surface is distinctly striate. 

 The central chamber is a megasphere, and in full-sized individuals 

 there are about five whorls of chambers. They all belong to N. 

 (Paronia) curvispira Meneghini, a companion-form to the large 

 microspheric Nummulites gizehensis Ehrenberg. 



Horizon. — Middle Eocene. 



'Derna' (No. 178). A large test of Nummulites gizehensis Ehr. 

 measuring 5*8 cm. in diameter and 7 mm. in greatest thickness. 

 Some limestone-matrix attached to the specimen carries a few tests 

 of N. rouaulti d'Arch., a form closely allied to N. curvispira, but 

 distinguished by its sharp periphery and greater umbilical axis. 



Horizon. — Middle Eocene. 



'Derna' (Nos. 177, 179-181). Nummulitic limestones with 

 N. gizehensis Ehr., N. curvispira Menegh., and N. rouaulti d'Arch. 

 Horizon. — Middle Eocene. 



