Vol. 67.] FORAMINIFERA, ETC. FROM CYRENAICA. 659 



Notes on the Fossils. 



Parasitic (?) Fungi. 



Pal^eachlya sp. 



The tests of Lepidocyclina elcphantina. Munier-Chalmas, which 

 form the bulk of rock-specimen No. 41 from Wadi Umzigga, are 

 seen in thin section under a high power to be in parts permeated 

 by a perforating fungus, which closely resembles Palceachhja 

 perforans Duncan. 1 The spores are 17/z in diameter, consisting of 

 a dark-brown nucleus and a transparent, yellowish investment, and 

 they are roughly spherical. They run in strings of six or more, 

 crossing one another, and so forming an open network. The thread- 

 like hvphae form a densely-matted structure, occurring in patches 

 through much of the test-wall of the foraminifer. These spores 

 remind one of many similar occurrences in the tests of Tertiary 

 foraminifera, noted by Carter and others. The brown colour of the 

 nucleus is probably the result of the reaction of organic agencies, 

 such as ulmic acid, on the iron of the accompanying sediments. 



Foraminifera. 



Ntjmmtjlites curvispira Meneghini, var. major, nov. 



The nummulites in specimen No. 88, referable to iV. curvispira, 

 possess an extraordinarily large megasphere. Its usual diameter 

 in that species and in the related N. tchihatcheffi D'Arch. is about 

 1 mm. Our specimens further differ from N. tchihatcheffi, which 

 has a rounded periphery, by being sub-acute on the margins. 



The diameter of the megasphere in the variety major is 1*75 mm. 



Orthophragmina pratti (Michelin). 



Orbitolites prattii Michelin, 1846, ' Iconographie Zoophyt.' p. 278 & pi. lxiii, 



fig. 14. 

 Orbitolites fortisii D'Archiac, 1850, Mem. Soc. Geol. France, ser. 2, vol. iii, 



p. 404 & pi. viii, figs. 10-12. 

 Orbitoides (Discocyclina) papyracea G umbel (non Boubee), 1868, Abhandl. 



K. Bayer. Akad. Wissensch. vol. x, p. 690 & pi. iii, figs. 3-12, 19-29. 

 Orthophragmina pratti (Michelin) Schlumberger, 1903, Bull. Soc. Geol. France, 



ser. 4, vol. iii, p. 274, pi. viii, figs. 1-3, 8-10, pi. ix, fig. 17 & text-figs, a, b. 



This is a well-known type of the older or Eocene group of 

 Orbitoides, some of the tests in the rock from Derna (No. 39) 

 having a diameter of 17 mm. They are somewhat flexuose, and 

 thus bear a certain resemblance to Orthophragmina sella (D'Arch.) 

 = 0. ephippium (Schlotheim), but are not so remarkably saddle- 

 shaped as that species I have not, so far, succeeded in cutting 

 through the initial series of chambers in the present specimens ; 

 but the thickness of the median series of chambers in vertical 



1 Q. J. G. S. vol. xxxii (1876) p. 205 & pi. xvi. 



