CEPHALOPODA. 123 



Ammonites henslowi, v. Goniatites henslowi. 



A. (Aegoceras) heterogenes, Young and Bird, T. Wright, Lias 

 Ammonites (1880), pi. xxxv, f. 46, p. 370. Middle Lias 

 (zone of A. capricornus) ; Robin Hood's Bay. Leckenby Col- 

 lection. 



A. hyperbolicus [Simpson MS.], J. Leckenby, Q. J. G. S. xv 

 (1859), pi. ii, f. 4 a, b, p. 12. Kellaways Rock; Red Cliff, 

 Scarborough. Leckenby Collection. 



A. (Arietites) impendens Young and Bird, T. Wright, Lias 

 Ammonites (1881), pi. xxii A, f. 1 5, p. 302. Lias (zone of A. 

 oxynotus); Robin Hood's Bay. Leckenby Collection. 



A. latidorsatus, Michelin, H. G. Seeley, A. M. N. H. ser. 3, xvi 

 (1865), p. 229. Cambridge Greensand; Cambridge. Presented 

 by the Rev. J. F. Blake, M.A. 



A. (Aegoceras) leckenbyi, T. Wright, Lias Ammonites (1880), 

 pi. xxx, f. 1 7, p. 344. Lower Lias (zone of A. armatus) ; 

 Whitby. Leckenby Collection. 



A. leptus, H. G. Seeley, A. M. N. H. ser. 3, xvi (1865), pi. x, f. 5, 

 p. 240. Cambridge Greensand; Ashwell. 



A. (Harpoceras) lythensis, Young and Bird, T. Wright, Lias 

 Ammonites (1882), pi. Ixii, f. 46, p. 444. Upper Lias; 

 Whitby. Leckenby Collection. 



A. ( Olcostephanus) multiplicatus, Roemer, A. Pavlow, Bull. 

 Soc. Imp. Nat. Mosc. (1889), pi. iii, f. 2. Lower Greensand 

 (Tealby Series); Donnington. 



A. navicularis, Mantell, var. nothus, H. G. Seeley, A. M. N. H. 

 ser. 3, xvi (1865), p. 228. Cambridge Greensand ; Cambridge. 



A. ochetonotus, H. G. Seeley, A. M. N. H. ser. 3, xvn (1866), 

 p. 174. Red Chalk ; Hunstanton. 



A. pachys, H. G. Seeley, A. M. N. H. ser. 3, xvi (1865), pi. xi, f. 4, 

 p. 227. Cambridge Greensand; Cambridge. 



A. placenta [Simpson MS.], J. Leckenby, Q. J. G. S. xv (1859), 

 pi. ii, f. 1, p. 10. Kellaways Rock; the Castle Rock, Scar- 

 borough. Leckenby Collection. 



