CONTENTS 
Page 
A new coelurid dinosaur from the Belly River Cretaceous of Alberta 1 
A new species of hadrosaurian dinosaur from the Edmonton formation (Cre- 
taceous) of Alberta 13 
On the genus Stephanosaurus, with a description of the type specimen of Lam- 
beosaurus lambei Parks 29 
On the skull and skeleton of Hypacrosaurus, a helmet-crested dinosaur from 
the Edmonton Cretaceous of Alberta 49 
Illustrations 
Plate I. Fore feet of Chirostenoles pergracilis ... 67 
II. Skeleton of Thespesius edmontoni 69 
III. Skull of Thespesius edmontoni 71 
IV. Pelvis and hind limbs of Thespesius edmontoni 73 
V. Skin impressions of Thespesius edmontoni 75 
VI — VIII. Skull of Lambeosaurus lambei Parks 77-81 
IX. Right ramus of Lambeosaurus lambei Parks 83 
X. Right dentary of Lambeosaurus lambei Parks 85 
XI. Skull and lower jaw of Hypacrosaurus altispinus Brown 87 
XII. Right ramus of Hypacrosaurus altispinus Brown 89 
Figure 1. Left manus of Chirostenoles pergracilis 4 
2. Left fore foot of Struthiomimus altus (Lambe) 5 
3. Dentaries of Chirostenotes pergracilis 8 
4. Diagrammatic view showing method of tooth replacement in Chiros- 
tenotes pergracilis 9 
5. Dorsal and caudal vertebrae of an unidentified theropod dinosaur. . 11 
6. Fore feet of Thespesius edmontoni 21 
7. Reconstructed right foot of Thespesius edmontoni 21 
8. Brain case of Lambeosaurus sp 37 
9. Skull of Lambeosaurus lambei Parks 33 
10. Right ramus of Lambeosaurus lambei 43 
11. Predentary of Lambeosaurus lambei Parks 45 
12. Enamelled face of dentary teeth of Lambeosaurus lambei Parks 46 
13. Skull of Hypacrosaurus altispinus Brown 51 
14. Cross-section of beak of Hypacrosaurus altispinus 52 
15. Cross-section of beak of Hypacrosaurus altispinus 52 
16. Teeth from dentary illustrating the type of dentition in the central 
part of the series 57 
17. Ischia of Hypacrosaurus 61 
68675—11 
