Yol. 67.] THE FOSSIL ECH1N0IDEA OF CYRENATCA. 667 



complete specimens. From sketches made in the field, the species 

 resembles S. lusitanica de Lor. 1 from the Middle Miocene (beds 

 III-V a, of Cotter's stratigraphical table) of Portugal. 2 



Scutella hunteri s Fourtau, from the Helvetian of Marmarica, is 

 smaller, and has shorter petals. M. Lambert has described several 

 new species of the Mediterranean Miocene Scutellce (S. almerai, 

 S. sardica, and S. tarraconensis), but they do not correspond with 

 my measurements of the Cyrenaican species. 



The Scutella occurred with fragments of a large Clypeaster, 

 which supports the probable Miocene age of this limestone. 



Amphiope dtjffi, sp. nov. 4 (PI. XLVII, figs. 2 & 3.) 



Test thin, breadth approximately equal to the length. The 

 greatest breadth is behind the apical disc. The test contracts 

 slightly towards the anterior end. Margin slightly sinuous. The 

 front half of the test is thicker than the posterior half. The petals 

 are oval ; the length is about equal to half the distance from the 

 centre of the test to the margin. Apical disc central. Lunules 

 wide and suboval, but bluntly pointed at the ends : the lunules 

 occur near the edge of the test. 



Dimensions in millimetres: — 



Cy 264. Cy 66. A. arcuata. 



Length 41 80 



Breadth 41 80 



Height 2 25 8 



Anterolateral petal : length 8 9 



Do. do. breadth ... 4 4"5 



Distribution. — In a nummulitic limestone: Sidi Eof Diasi- 

 asia, south-east of Cyrene (Cy 66). Near the camp at Ain Sciahat, 

 Gyrene (Cy 264). Both specimens occur in nummulitic limestone, 

 and Mr. R. B. Newton remarks that the specimen from Ain 

 Sciahat includes foraminifera resembling Nummulites complanata. 



Affinities. — This species is interesting, owing to the early 

 occurrence of the genus. Both specimens are poorly preserved, as 

 well as some fragments which appear to belong to this species; 

 but the lunules are shown so distinctly that there can be no doubt 

 of the generic determination ; and the genus is most abundantly 

 represented in the Miocene. 



The nearest ally of this species is A. arcuata (Fuchs) from the 

 Miocene of Siwa. The two species, however, differ, as in A. duffi 

 the test tapers less anteriorly, the petals are oval rather than clavate, 

 the lunules are rather more pointed, and the size is much smaller. 



i 'Ech. Tert. Portugal' Dir. Trav. Geol. Portugal, 1896, p. 12 & pi. ii, 

 figs. 1-3 c. 



2 Ibid. pi. v, p. 50. 



3 D. E. Pachundaki, ' Contrib. Etude Geol. de Marsa Matrouh (Marmarique) ' 

 Eev. Internat. Egypte, vol. iv (1907) p. 24 & pi. ii, fig. 3. 



4 Named after my colleague in the expedition, Mr. M. B. Duff", to whom is 

 due the topographical map. 



Q. J. G. S. No. 268. 2 z 



