GASTEROPODA. 99 
Cerithinella ? sp, W. H. Hudleston, Brit. Jurass. Gasterop. Inf. 
Ool. (1890), pl. xii, f w  Nerinwa? cingenda (Sowerby), 
W. H. Hudleston, G. M. dec. 3, I (1884), pl. iv, f£. 9, 9 a, p. 112. 
Dogger Series ; Blue Wyke. Leckenby Collection. 
Cerithium abbreviatum, J. Leckenby, Q. J. G. S. xv (1859), 
pl. ii, f. 12, p. 13. Kellaways Rock; the Castle Rock, Scar- 
borough. Leckenby Collection. 
C. bicinctum, W. H. Hudleston, G. M. dec. 2, vi (1880), pl. xvi, 
f. 4a, b, p. 483. Coral Rag; Malton (probably Langton Wold). 
Leckenby Collection. 
C.? caninum, v. Fibula canina. 
C. circe, dOrbigny, W. H. Hudleston, Brit. Jurass. Gasterop. 
Inf. Ool. (1889), pl. x, f. 4, p. 168. Inferior Oolite ; Bridport. 
C. comma, Miinster, W. H. Hudleston, Brit. Jurass. Gasterop. 
Inf. Ool. (1889), pl. x, f. 2, p. 167. Inferior Oolite (Cadomensis- 
bed); Oborne, near Sherborne. 
C. comma, Miinster, var. near to C. unitorquatum, Hébert and 
Deslongchamps, W. H. Hudleston, Brit. Jurass. Gasterop. Inf. 
Ool. (1889), pl. x, f. 3, p. 168. Inferior Oolite (Parkinsoni-zone) ; 
Bridport Harbour. 
C. (Kilvertia) comptonese, v. Exelissa weldonis. 
C. costigerum, Piette, J. Lycett, Supp. Mon. Moll. Gt. Ool. ete. 
(1863), pl. xli, f. 11, 11 a, b, p. 92. Forest Marble ; Laycock. 
Walton Collection. 
C. culleni, v. Cerithium muricatum va7. culleni. 
C. cf. grandineum, Buvignier, W. H. Hudleston, G. M. dee. 2, vi 
(1880), pl. xvi, f. 2 a, b, c, p. 482. Coral Rag; Ayton, near 
Scarborough. Leckenby Collection. 
C.? hemicinctum, J. Lycett, Supp. Mon. Moll. Gt. Ool. ete. (1863), 
pl. xl, f. 17, p. 91. Forest Marble; Laycock. Walton Col- 
lection. 
C. leckenbyi, W. H. Hudleston, G. M. dec. 3, 1 (1884), pl. i, 
f. 12, p. 61, and Brit. Jurass. Gasterop. Inf. Ool. (1889), pl. ix, 
f. 4, p. 158. Dogger Series; Blue Wyke. Leckenby Collection. 
Cc. marollinum, dOrbigny, W. Keeping, Foss. Upware and 
Brickhill (1883), pl. in, f. 6, p. 93. Lower Greensand; Upware. 
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