502 Bulletin American Museum of Natural History. [Vol. XXXIV, 
the Pachypodosauria). There are only fragments of the ischium at present, 
Cope’s better specimens apparently being lost. The proximal extremity 
of the tibia of Celophysis bauri, if the determination is correct, differs essen- 
tially from the Pachypodosauria. From the anterior leg are only fragments 
of the manus, showing it to have been extremely long and slender, very much 
like Ornitholestes. A small fragment may represent part of the scapula. 
ee 
————-——- 
fare 
= 
ros 
Sa: 
‘ 
Batt 
Sean Rm 
Fig. 39. .Celophysis longicollis. Right pubis (articular facet fitting with the ilium, Fig. 
38, therefore belonging with the same individual); a medial, b upper, c articular view. xX 3}, 
(Type: Cope, l. c. 1887, p. 228). 
Celophysis longicollis is the largest: Calophysis willistonit the smallest 
species.' There may even be more than three similar species. In the 
sacral vertebree of Celophysis bauri the exitus of the spinal nerves are 
1 The figures will give the best idea of these species. 
