250 PROCEEDINGS COTTESWOLD CLUB 191 1 



Remarks. — The two specimens figured by Morris and Ly- 

 cett {op. cit., tab. III., figs. 13, I3fl) may be taken as the syn types 

 of the species. They are in Jermyn Street Museum and are 

 registered as No. 9182 (right valve ; fig. 13) and No. 9181 (left 

 valve ; fig. 13a). The matrix is the characteristic " Minchin- 

 hampton Stone " of the Minchinhampton Beds. 



Record. — Minchinhampton Common, near Stroud. 



GERVILLIA TORTUOSA (J. de C. Sowerby) 



T.d. 1826.' Gastrochcena tortuosa J. de C. Sowerby, Min. Conch 



vol. vi., p. 49. 

 T.f. Ibid., tab. DXXVI., fig. i. 

 T.l. " Blea Wyke " [Ravenscar, Yorkshire]. 

 H. " Dogger " [Nerincea-Bed. Aalenian]. 

 ■^. [murchisoncB]. 



Colin. Sowerby Colin., Brit. Mus. Nat. Hist., London. [43007]. 

 1829. Gastrochcena tortuosa Sow., J. Phillips. Gaol, of Yorksh., 



pt. I., (ist ed.), p. 155, pi. XL, fig. 36. 

 1835. Gastrochcena tortuosa Sow., J. PhilHps, Geol. Yorksh., 



pt. T, (2nd ed.), p. 157, pi. XL, fig. 36. 

 1842-44^ Gastrochcena tortuosa Sow., Conchyhologie Minera- 



logique de la Grand Bretagne (French edition of 



Sowerby 's Min. Conch.), translated by E. Desor. with 



notes by L. Agassiz, p. 540, tab. DXXVL, figs. 1-3. 

 1842-45" Gastrochcena tortuosa Sow., Mineral-Conchologie 



Grossbrittaniens (German edition of Sowerby's Min. 



Conch.), by E. Desor. and L. Agassiz, p. 548, tab. 



DXXVL, figs. 1-3. 

 1853. Gcrvillia tortuosa Phillips, J. Lycett, " The Cotteswold 



Hills," pp. 48, 56 and 64. 

 1875. Gervillia tortuosa Phill., R. Etheridge in J. PhilHps, 



Geol. Yorksh , pt. L (3rd ed.) p. 247, pi. XL, fig. 36. 

 1882. Gervillia tortuosa Phillips, E. Witchell, " Geol. of Stroud," 



pp. 48, 52 and 59. 



Remarks. — The type-specimen in the Sowerby Collection 

 at the British Museum (Nat. Hist.) came from the Nerincsa- 

 Bed in the Dogger at Blea Wyke. 



1 I am indebted to Mr C. D. Sherborn for directing my attention to a pamphlet by 

 Renevier (Bull. Soc. vaud. des Sci. nat., vol. IV., No. 36, 1855, pp. .^iS-j'o) in which the 

 exact dates of publication of the various parts of Sowerby's Min. Conch, are worked out. 



2 These dates are given on the authority of Mr C. D. Sherborn. 



