108 GASTEROPODA. 



pi. i K, f. 44, pi. i L, f. 21, p. 294. Fig. 21, May Hill Beds; 



Mullock, Dalquharran. Fig. 44, Middle Bala ; Allt-yr- Anker. 



According to Salter (Cat. Camb. Sil. Foss. p. 83) the specimen 



from Mullock is not M. simplex. 

 Murchisonia torquata, F. McCoy, Brit. Pateoz. Foss. (1852), 



pi. i L, f. 19, 19 a, p. 294. Upper Ludlow ; Spital, Kendal. 

 M. verneuiliana, De Koninck, J. Donald, Q. J. G. S. XLIII 



(1887), pi. xxiv, f. 6, 7, p. 626. Carboniferous Limestone; Settle. 



Burrow Collection. 



M. verneuiliana var. kendalensis, v. Murchisonia kendalensis. 

 Natica adducta, Phillips, var. canina, W. H. Hudleston, G. M. 



dec. 2, ix (1882), pi. v, f. 7, p. 200. Dogger Series; Blue 



Wyke. Leckenby Collection. 

 N. (Euspira) alta, J. Lycett, Supp. Mon. Moll. Gt. Ool. etc. 



(1863), pi. xlv, f. 22, 22 a, p. 97. Forest Marble; Laycock. 



Walton Collection. 



N. arguta, Phillips, W. H. Hudleston, G. M. dec. 2, vn (1880), 



pi. ix, f. 5 a, b, p. 297. Coral Rag? Slingsby. Leckenby 



Collection. 

 N. calypso, d'Orbigny, var. tenuis, W. H. Hudleston, G. M. 



dec. 2, ix (1882), pi. v, f. 13, p. 202. Lower Calcareous Grit; 



Cayton Bay. Leckenby Collection. 

 N. levistriata, A. J. Jukes-Browne, Q. J. G. S. xxxm (1877), 



pi. xxi, f. 6, p. 498. Cambridge Greenland ; Cambridge. 

 N. occlusa, S. V. Wood, Crag Mollusca i (1848), pi. xii, f. 4 a, b, 



p. 146. Bridlington Crag; Bridlington. Leckenby Collection. 



N. parva, Sowerby. Naticopsis? glaucinoides (Sowerby), F. 



McCoy, Brit. Palseoz. Foss. (1852), pi. i K, f. 35, 35 a, p. 302. 



Upper Ludlow ; Benson Knot, near Kendal. 

 N. proxima, W. H. Hudleston, G. M. dec. 2, ix (1882), pi. v, 



f. 8 a, b, p. 200. Dogger ; Blue Wyke. Leckenby Collection. 

 N. punctulata, J. F. Blake, Q. J. G. S. xxxi (1875), p. 224. 



Kimeridge Clay ; Market Rasen. 

 N. punctura (Bean), W. H. Hudleston, G. M. dec. 2, ix (1882), 



pi. v, f. 11, 12, p. 201. Fig. 11, Cornbrash ; Scarborough. 



Fig. 12, Kellaways Rock ; Scarborough. Leckenby Collection. 



