IQO PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



Part 6 gives an account of the South African genus Massospon- 

 dylus. It is based partly upon the collection from Beaucherf, in 

 the Museum of the Eoyal College of Surgeons, referred to M. cari- 

 natus ; and partly upon a collection from the Telle itiver, obtained 

 by Mr. Alfred Brown of Aliwal North, referred to M. Browni. The 

 former is represented by cervical, dorsal, sacral, and caudal vertebrae ; 

 ilium, ischium, and pubis ; femur, tibia ; humerus, metatarsals, and 

 phalanges. The latter is known from cervical, dorsal, and caudal 

 vertebrae, femur, metatarsals, and bones of the digits. The affinities 

 with Zandodon are, in some parts of the skeleton, stronger than with 

 Euskelesaurus. 



Part 7 gives an account of Eushelesaurus Browni, partly based 

 upon materials obtained by Mr. Alfred Brown from Barnards Spruit, 

 Aliwal North, and partly on specimens collected by the Author, with 

 Dr. W. G. Atherstone, Mr. T. Bain, and Mr. Alfred Brown, at the 

 Kraai River. The former series comprises the maxillary bone and 

 teeth, vertebrae, pubis, femur, tibia and fibula, phalanges, chevron 

 bone and rib. The latter includes a cervical vertebra and rib, and 

 the lower jaw. The teeth are stronger than those of Teratoscmrus, 

 or any known Megalosaurian. The anterior part of the head was 

 compressed from side to side, and the head in size and form like 

 Megalosaurus, so far as preserved. The pubis is twisted as in 

 Staganolepis and Massospondylus, with a notch instead of a foramen 

 at the proximal end, as in those genera ; and it expands distally 

 after the pattern of Zandodon. The chevron bones are exception- 

 ally long, and the tail appears to have been greatly elongated. The 

 femur is intermediate between Megalosaurus and Palceosaurus, but 

 most resembles Zandodon and Massospondylus. The tibia in its 

 proximal end resembles many Triassic genera ; and in its distal end 

 is well distinguished from Massospondylus by its mode of union 

 with the astragalus. The claw-phalanges are convexly rounded, 

 being wider than is usual in Megalosauroids. The lower jaw from 

 the Kraai River gives the characters of the articular bone, and the 

 articulation, as well as of the dentary region and teeth. The 

 cervical vertebra is imperfect, but is remarkable for the shortness 

 of the centrum, being shorter than in Megalosaurus. 



In Part 8 an account is given of Hortalotarsus shirtopodus from 

 Barkly East, preserved in the Albany Museum. It is an Euskele- 

 saurian, and exhibits the tibia and fibula, and tarsus. There is a 

 separate ossification for the intermedium, which does not form an 

 ascending process ; and the astragalus is distinct from the calcaneum. 

 The metatarsals are elongated, and the phalanges somewhat similar 

 to those of Dimodosaurus. 



Part 9, in conclusion, briefly examines the relations of the Saur- 

 ischian types with each other, and indicates ways in which they 

 approximate towards the Ornithosauria. It is urged that the Ornitho- 

 sauria are as closely related to the Saurischia as are the Aves to the 

 Omithischia ; and that both divisions of the Saurischia approximate 

 in Staganolepis and Belodon. Finally, a tabular statement is given 

 of the distribution in space and time of the 25 Old-World genera 



