7 
368 General Notes, [April 
limbs, are hollow, having large central cavities surrounded b 
thin walls, as in Megadactylus. There are four sacral vertebræ. 
says they are wanting; but he does not appear to have pos- 
sessed the most anterior of the series. In neither species is 
there a distinct third trochanter of the femur, but there is, not 
far below the great trochanter on the anterior face, a low, longi- 
tudinal, ridge-like angle. The femoral condyles have but little 
anteroposterior extent, which implies but little flexure of the 
knee. The humerus is a good deal smaller than the femur, but 
the disproportion is not so great as in Lzlaps. 
The form seems to have been that of a terrestrial reptile which 
walked readily on the hind legs, and was probably a great leaper. 
The extremely long neck is a striking peculiarity, giving propor- 
trons to the body about like those of the swan. The habits were 
probably predaceous and carnivorous. 
Two species are indicated by my collections, as follows: 
Celurus longicollis. Cervical vertebre one-third longer than 
those of C. fragilis Marsh; the sides of the centrum not sulcate; 
the anterior articular face of an anterior centrum not convex. 
The faces are oblique, showing that the head was carried above 
the level of the body. The caudal vertebre were all quite 
slender, indicating the length of the tail. 
Length of body of cervical vertebra 063 
Diameters of posterior cup { —. oP 
Length of centrum of dorsal vertebra i 
A rtical 
Diameters of posterior face { xs ni “020 
transverse O21 
Length of caudal centrum .OS1 
x vertical 
Diameters of posterior face { ER in 
Length of femur -215 
; antero-posterior.. .024 
Diameters of condyles { PERENE .030 
This reptile was about the size of a greyhound. 
Cælurus bauri 
of the C. longicollis. The femur is not so strongly grooved at the 
trochanteric ridge. 
Diameters of cervical centrum behind $ Vertical „ma 
WANEVETED a croin dnssrarors -O13 
Length of sacrum -073 
Diameters of anterior sacral centrum in front { VETtical------++-- -014 
wes one an w mat z ae transverse. s.s.s... .OI5 
y ne 022 
erie : :* Dedicated to Dr. Geor oe eee Ca, BA EAA AEE AE E no Te a j 
sal 
