568 MR R. BULLEN NEWTON ON SOME CRETACEOUS BRACHIOPODA 



siderable resemblance to C. A. White's* Neithea quadricostata from the Cretaceous 

 deposits of Brazil (province of Sergipe), and only seems to differ in possessing more 

 prominent costal furrows. It would appear to be quite permissible to retain Coquand's 

 specific name of tricostata, to which was attached the generic term Janira, not- 

 withstanding that Bayle f had described in previous years another fossil as Pecten 

 tricostatus because the specific term had been applied to two different genera. 



Distribution. — Hitherto this species appears to have been known only in the 

 Cenomanian beds of Northern Africa, Algeria, and Tunisia. 



Occurrence. — In a cream-coloured limestone with occasional ferruginous staining, 

 and containing minute specks of glauconite (?) and mica. 



Locality. — Lobito, Angola. 



Collector. — Mr E. Robins. 



Neithea quadricostata, J. Sowerby. (PI. I, fig. 8.) 



Pecten quadricostata, J. Sowerby: Mineral Conchology, 1814, vol. i, pi. lvi, figs. 1, 2, p. 121. 



Neithea quadricostata, R. B. Newton: Trans. Roy. Soc. South Africa, 1909, vol. i, pi. ii, figs. 18-20, p. 55. 



Remarks. — The collection contains a specimen showing an internal view of a 

 small upper valve in the limestone matrix ; it belongs in all probability to Pecten 

 quadricostata, J. Sowerby. Although of considerably less size, it agrees remarkably 

 well with an excellent text-figure in Mr H. Woods' Monograph of the Cretaceous 

 Lamellibranchia of England, published by the Palseontographical Society, 1903, 

 vol. i, part 5, fig. 5, p. 214, depicting a similar interior of a specimen from the 

 Upper Greensand of Warminster, which is attributed by some authors to the 

 Cenomanian horizon. In the Angola fossil the length is greater than the height, 

 which is one of the characters of the species ; and the shell is furnished with a 

 relatively large posterior ear, the anterior one not being preserved. The surface 

 is covered with some twenty rounded radial costse separated by furrows of rather 

 greater width, to see which a wax squeeze has been necessary. Otherwise the 

 flattened-looking ribs of the fossil represent the broad furrows, as would be seen 

 on the external surface if it were so exposed. The wax impression also proves 

 that the valve was distinctly concave. 



Dimensions. — 



Length . . . . . .21 mm. 



Height . . . . . . 19 ,, 



Distribution. — According to Mr Woods, the species ranges from the Albian 

 to the Cenomanian in British and European regions ; the species has also been 

 recorded from Africa (Zululand, etc.). 



Occurrence. — In a cream-coloured limestone. 



Locality. — No. 19 — Catumbella Dam. 



* "Contributions to the Paleontology of Brazil," Archiv Mus. Nacion. Brazil, 1888, vol. vii, pi. iv, figs. 1, 2, p. 37. 

 t Foornel, Richesse minerale de I'Alge'rie, 1849, pi. xviii, fig. 30, p. 369. 



