ATLAXTOSATJRID^. 151 



R. 97 a. The imperfect left ischium ; from the Isle of Wight. 



Fox Collection. 



28688. The proximal portion of the right ischium of an individual 

 of larger size than Ko. R. 97 ; from the Isle of Wight. 



Mantell Collection. Pur chased, 1853. 



R. 164. The proximal portion of the right ischium of a young indi- 

 vidual ; from the Isle of Wight. Fox Collection. 



R. 164 a. The proximal portion of the left ischium ; from the Isle 

 of Wight. Same history. 



R. 986. A terminal phalangeal of the pes, wanting the extremity, 

 together with an associated foot-bone ; from Hastings. 

 The phalangeal accords closely with the specimen referred 

 to Ornithopsis liumeroeristatus ; its large size indicates 

 that it probably belonged to the present species, since 

 it is nearly twice the dimensions of the phalangeal of 

 Cetiosaurus brevis, No. 36559. JS T o history. 



R. 986 a. A rib, not improbably belonging to this form; locality 

 unknown. It differs from the ribs of Iguanodon bernissar- 

 tensis, not only by its superior size, but also in contour, 

 and appears to resemble those of Brontosaurus. No history. 



R. 986 b. A larger rib of similar type ; from Hastings. 



Dawson Collection. Purchased, 1888. 



Ornithopsis humerocristatus (Hulke 1 ). 



Syn. Cetiosaurus humerocristatus, Hulke 2 . 

 (?) Gigantosaums megalonyx, Seeley 3 . 

 (?) Ornithopsis leedsi, Hulke 4 . 



The humerus is of the type of Brontosaurus, and quite different 

 from that of Cetiosaurus. There is great probability that Giganto- 

 saurus megalonyx and Ornithopsis leedsi are specifically identical. 

 The pelvis of the latter is of the type of 0. hidkei, although pre- 

 senting well-marked specific differences. 



Hal. Europe (England). 



44635. The left humerus : from the Kimeridge Clay (Upper Ju- 



{Fig.) rassic) of Weymouth, Dorsetshire. The type specimen ; 



figured by Hulke in the ' Quart. Journ. Geol. Soc.' vol. 



xxx. pi. ii. ; referred to this genus by the writer in 



vol. xliv. p. 57. Purchased, 1873. 



1 Quart. Journ. Geol. Soc. vol. xxx. p. 17 (1874). — Crfiosaurus. 2 Loc. cit, 

 3 Index to Avcs kc. in Cambridge Museum, p. 04 (1869).— ]S"ot figured. 

 * Quart. Journ. Geol. Soc. vol. xliii. p. 695 (1887). 



