﻿172 ME. R. B. NEWTON ON THE [Feb. 1905, 



described'; the right shows the sculpture and general configuration, 

 while the other valve exhibits the cast with the muscular-scar 

 impressions, pallial line, and radial striations spreading down from 

 the umbonal area. It certainly bears a very close relationship to 

 some forms from Thebes in Egypt, preserved in the British Museum. 

 There is a second specimen of this shell which is entirely a cast 

 and also with closed valves, exhibiting the usual markings as 

 previously observed. 



Dimensions in millimetres. 



Urnbono -ventral =60 I Convexity (valves closed) =25 



Antero-posterior =73 | 



Locality. — Garrasgooi, 3 miles south-west of Upper Sheikh. 



Collector. — Major R. G. Edwards Leckie. 



Matrix. — Limestone occurring below the more cherty limestone- 

 beds, containing foraminifera, such as Operculina, etc. (see § G in 

 the Notes on the Foraminiferal Structures, p. 176). 



Lucina cf. Men arm, Deshayes. (PI. XXI, fig. 8.) 



Lucina Menardi, Deshayes, ' Description des Coquilles Fossiles des Environs de 



Paris ' vol. i (1825) p. 94 & pi. xvi, figs. 13-14. 

 Lucina Menardi {?), Bellardi, ' Catal. Toss. Nummulitici d'Egitto ' Mem. E. 



Accad. Sci. Torino, ser. 2, vol. xv (1855) p. 188. 



This specimen consists of a well-preserved fragment of a Lucini- 

 form shell with large subventricose valves, showing fairly-regular 

 concentric striations and a portion of the postero-lateral depressed 

 area. Indications of the ligament are also present in the dorsal 

 region, although beyond the summits in the anterior direction the 

 shell is fractured and all further characters are wanting. Judging 

 from Deshayes's figures of this species, the present specimen appears 

 to resemble it very closely. It differs from Lucina gigantea in 

 possessing the well-defined area of the posterior region. 



Dimensions in millimetres. 



TJmbono-ventral = 65 I Maximum convexity (valves 



I closed) =30 



Bellardi has doubtfully recorded the occurrence of this species in 

 the Eocene formation of Egypt ; it was originally described from 

 the Middle Eocene of France. 



Locality. — Garrasgooi, 5 miles south-west of Upper Sheikh. 



Collector. — Major R. G. Edwards Leckie. 



Matrix. — Sandy-limestone occurring below the more cherty 

 limestone-beds, with a reddish tinge. 



Fimbria cf. lamellosa (Lamarck). (PL XXI, fig. 9.) 



Lucina lamellosa, Lamarck, Ann. Mus. Hist. Nat. Paris, vol. vii (1806) p. 237, 



& vol. xii (1808) p. 458 & pi. xlii, fig. 3. 

 Corbis lamellosa, Deshayes, ' Description des Coquilles Fossiles des Environs de 



Paris ' vol. i (1824) p. 88 & pi. xiv, figs. 1-3. 

 Fimbria lamellosa, Frauscher, Denkschr. d.k. Akad. d. Wissensch. Wien, vol. li 



(1886) pt. ii, p. 172. 



This fossil consists of a fragmentary impression of a longi- 



