ASTARTE. 113 



d'Orbigny. 1 A. acuta, Reuss,~ is another allied form, but possesses fewer ribs than 

 A. formosa. Sec also A.subcostata (p. 109). 



Type. — From Blackdown, in the Bristol Museum. 



Distribution. — Upper Greensand (zone of Schloenbachia rostrata) of Blackdown 

 and Hal don. 



Astarte impolita, Sowerby, 1836. Plate XV, fig. 14. 



1836. Astaete impolita, /. de G. Soiverby. Trans. Geol. Soc, ser. 2, vol. iv, 



pp. 239, 341, pi. xvi, fig. 18. 

 1854. — —J. Morris. Cat. Brit. Foss., ed. 2, p. 187. 



The only example of this which I have seen is the type specimen from the 

 Greensand of Blackdown. 3 Both valves are present, but the parts near the umbo 

 and lunule are missing. The specimen is in the Bristol Museum. 



Sub-genus— Eeiphyla, W. M. Oabb, 1864. 



(' Geol. Surv. California, Palaeont.,' vol. i, p. 180. Stoliczka, ' Pakeont. Indica, Cret. Fauna, S. India,' 



vol. Hi, 1870, p. 156.) 



Astaete (Eeiphyla) obovata, Sowerby, 1822. Plate XV, figs. 15-18. Plate XVI, 



figs. 1-3. 



1822. Astarte obovata, J. de C. Soiverby. Min. Conch., vol. iv, p. 73, pi. cccliii. 



1842. — — F. Burner. De Astartarutn Genere, p. 22. 



1845. — — E. Forbes. Quart. Journ. Geol. Soc., vol. i, p. 241. 



1850. Corbis obovata, A. d'Orbigny. Prodr. tie Pal., vol. ii, p. 78. 



1852. Astarte Brunneri, F. J. Pictet arid W. Roux. Moll. Foss. Gres verts de 



Geneve, p. 435, pi. xxxii, fig. 3. 

 — — gurgitis, Pictet and Roux. Ibid., p. 436, pi. xxxiii, fig. 1. 



1854. obovata, J. Morris. Cat. Brit. Foss., ed. 2, p. 187. 



1857. — F. J. Pictet and E. Renevier. Foss. Terr. Aptien (Mater. 



Pal. Suisse, ser. 1), p. 86, pi. xi, fig. 1. 



1 'Prodr. de Pal.,' vol. ii (1850), p. 77. 



2 'Die Verstein. der bohm. Kreideformat.,' pt. 2 (1846), p. 3, pi. xxxiii, fig. 17; pi. xx.wii, fig. II; 

 Notling, 'Die Fauua d. baltiscli. Cenoman.' (Palaeont, Abhandl., vol. ii, 1885), p. 28, pi. v, fig. 1. 

 According to Notling, A. plauensis, Geinitz, is a synonym of A. acuta. 



3 Astarte multistriata was also described by J. de C. Sowerby from Blackdown, but I have not 

 seen any example of it. See 'Trans. Geol. Soc.,' ser. 2, vol. iv, pp. 240, 341, pi. xvi. fig. 17 ; Morris. 

 'Cat. Brit, Foss.,' ed. 2 (1854), p. 187. 



15 



