PROGRESS IN VERTEBRATE PALEONTOLOGY 459 



which he regarded as representing a large phytosaur, under the 

 designation of Erythrosuchus. Of these remains a fuller account 

 has been given by their original describer during the period 

 under review in the Annals of the South African Museum 

 (v. pp. 187 et scq.), where the same view of their affinity is 

 maintained. 



Dr. Broom, in the Proceedings of the Zoological Society of 

 London (1906, pp. 591 et seq.) has also given an account of another 

 Karoo reptile — Hoivesia — from the Aliwal North district. In his 

 original notice Dr. Broom thought that Hoivesia might be 

 included in the Rhynchocephalia ; but he is now of opinion that, 

 together with Gnathodon, it is best regarded as representing 

 another group, the Gnathodontia. This group, to which 

 ordinal rank is assigned, is considered to be related in some 

 degree to the rhynchocephalians, but more nearly to the 

 phytosaurs. 



Taking next the ichthyosaurs, we find that Dr. Smith 

 Woodward {Geol. Mag. Decade 5, iii. pp. 443-4) has described 

 two specimens containing in their interior the skeletons of 

 foetuses. One of these, from the Lias of Somerset, is of 

 special interest as having been described so long ago as 1849 

 by Dr. J. Chaning Pearce. This, however, is not all relating to 

 this group, for Mr. C. W. Gilmore, who published a memoir on 

 the osteology of the American fish-lizard commonly known as 

 Baptanodon in the Memoirs of the Carnegie Museum, Pittsburgh, 

 in 1905, has communicated a further notice of the osteology of 

 the genus in a later issue of that serial (ii. art. 9, 1906), in which 

 he describes a new species. In referring to the plates in the 

 sclerotic of the eye, this author states that their mode of 

 articulation admits of a certain amount of contraction and 

 expansion in the bony ring. Mr. Gilmore still maintains the 

 distinctness of Baptanodon from the European Op/it/mhnosaurus, 

 although admitting the occurrence of a representative of the 

 latter in American strata. 



Next to that on the Phytosauria, perhaps the most important 

 memoir on fossil reptiles issued during the period under review 

 is one by Mr. B. Brown on the Upper Cretaceous genus Champ- 

 sosaurns, published in the Memoirs of the American Museum 

 (ix. part 1, December 1905). The genus has often been placed 

 in the Rhynchocephalia, as the representative of a special sub- 

 order — Choristodera. In the author's opinion that group is, 



