308 F. Chapman — Tertiary Foraminifera 



a good head-shield only slightly distorted, and corresponds ia 

 character to Neseuretus quadratus (Hicks), ^ but apparently belongs 

 to a young individual, as it is of comparatively small size (13 mm. 

 long). The glabella is too narrow to ascribe it to N. ramseyensis, 

 Hicks. The basal lobes are well shown, and there is a faint indication 

 of the two anterior pairs of lateral furrows. The punctation of the 

 surface also corresponds to that of JV. quadratus. 



Neseuretus, sp. (PI. XII, Fig. 6.) 



1873. Somalonotus monstrator, Salter : Cat. Camb. Sil. Foss. "Woodw. Mus., p. 22 



[a 482). 

 1888. Somalonotus monstrator, Etheridge : Pal. Foss. Brit. IsL, p. 54. 

 1891. Neseuretus, sp., "Woods : Cat. Type Foss. Woodw. Mus., p. 148. 



Salter gave the name Homalonotus monstrator to a trilobite from 

 what he considered the base of the Arenig Beds (=Tremadoc. 

 according to Hicks) in Eamsey Island. The single original 

 specimen (a 482) on which this species was founded consists of 

 an imperfect and badly-preserved pygidium, which obviously belongs 

 to the genus Neseuretus,- though the species is indeterminable. 



EXPLANATION OF PLATE XII. 



[All the figures are of Salter's original specimens in the "Woodwardian iluseum.] 



Fig. 1. — OJeniis {Paraholmella) Planti, Salter. Upper Lingula Flags, Moel Grou. 



a, 272. 

 Figs. 2 and 3. — Olenns (s.g. ?) expansus, Salter. Upper Lingula Flags, Moel Gron. 



a, 275. 

 Fig. 4. — Neseurettis recurvatus, Hicks? Tremadoc, Ramsey Island, a, 469. 

 Fig. 5. — Neseuretus quadratus, Hicks ? Tremadoc, Eamsey Island, a, 469. 

 Fig. 6. — Neseuretus, s^. Tremadoc, Eamsey Island. «, 482. 



V. — Tertiary Foraminiferal Libiestones from Sinai. 

 By Frederick Chapman, A.L.S., F.R.M.S. 

 (PLATES XIII AND XIV.) 3 



THE following descriptions are based upon a collection of 

 foraminiferal limestones, chiefly nummulitic, from Sinai, which 

 VTQXQ sent to the British Museum for description and determination 

 by Captain H. G. Lyons, E.E., F.G.S., Director of the Geological 

 Survey of Egypt. 



Our previous knowledge of Sinaitic foraminifera has been some- 

 what scanty. It was pointed out, however, chiefly by Bauerman, 

 that the Nummulitic Series is very well developed in this particular 

 area, the country on the east side of the Gulf of Suez. 



The occurrence of NummuUtes and Operculina is recorded in 

 Mr. Bauerman's paper ■» mainly from a locality south of Wadi 

 Gharandel. Professor Eupert Jones supplied a note to that paper, 

 and from the latter locality recorded NummuUtes Gizehensis (large 



1 Hicks: QJ.G.S., toI. xxix (1872), p. 45, pi. iii, figs. 11-13. 



2 Hicks: Q.J.G.S., vol. xxix (1872), p. 44. 



'•* The Plates will appear with Part II, in the August Number. 

 * "Note on a Geological Reconnaissance made in Arabia Petrtea in the Spring of 

 1868 " : Quart. Journ. Geol. Soc, rol. xxv (1868), p. 38. 



