'264 



SUPPLEMENT. 



between the pre- and postacetabular notches, the deeper 

 preacetabular notch, and apparently by the more forward 

 direction of the pubic process. It apparently closely re- 

 sembles the ilium of No. E. 1636; its diameter being 

 probably somewhat increased by pressure. 



Dawson Collection. Purchased, 1884. 



R. 1636. An imperfect skeleton, probably referable to this species ; 



{Fig.) from the Wadhurst Clay of Shornden, near Hastings. 

 The bones preserved comprise a number of imperfect 

 vertebrae and ribs ; the imperfect right scapula and cora- 

 coid; a humerus, radius, and ulna; part of the right 

 ilium ; the left femur, with the shaft very imperfect ; the 

 head of a tibia ; part of a fibula ; an imperfect astragalus, 

 with other bones of the feet ; and a sternal (?)bone. The 

 ilium is figured (reversed) by the writer in the ' Quart. 

 Journ. Geol. Soc/ vol. xlvi. p. 37, fig. 1 E \ 



- Dawson Collection. Purchased, 1889. 



R. 1634. A middle dorsal vertebra, probably referable to this 

 species ; from Shornden. This specimen, in which the 

 neural spine is wanting, agrees in size with the earlier 

 dorsals of the preceding specimens. The costal facet is 

 placed on the level of the neural platform, and thus re- 

 sembles the figured dorsal of I. dawsoni (supra, i. p. 197) ; 

 but in addition to its much smaller dimensions the present 

 specimen is distinguished by its much more compressed 

 and carinated centrum. The length of the centrum is 

 0,110 (4 inches), its height 0,089 (3-5 inches), and its 

 width 0,076 (3 inches). 



Dawson Collection. Purchased, 1889. 



Specifically Undetermined Specimens from the Wadhurst Clay near 

 Hastings. All belong to the Dawson Collection. Purchased, 1889. 



R. 1633. A left humerus, imperfect proximally ; from Hoilington. 



R. 1633 a. The centrum of a dorsal vertebra, apparently associated 

 with the preceding. 



R. 1631. An imperfect ulna. 



R. 1630. The two extremities of the tibia, and the imperfect astra- 

 galus of the left side. Although slightly the astragalus 

 resembles the corresponding bone of jNo. II. 33 (seep. 262). 



1 In the text of the paper cited the specimen No. R. 8111, b (p. 263), is 

 incorrectly given as the figured one. 



