486 Bulletin American Museum of Natural History. [Vol. XXXIV, 
lower prominence of the lateral condyle is still about 2 cm. away from the 
lateral border of the bone. In other Phytosaurs the condyles are not 
so distinctly developed. 
Fig.1. Typothorax coccinarum Cope. Right femur; a posterior, b lateral view, c upper 
(thick) and lower (thin) contour, one upon the other to. show the twisting of the distal end. 
x + (Type: Cope, l. c. 1887, pl. 1, fig. 3). 
Fig. 2. Typothorax coccinarum. Proximal end of tibia. xX i. 
The right femur is quite complete. In the left one the distal end is 
missing; the bone is still connected by matrix with a rib, a dorsal and a 
caudal dermal scute. 
The measurements of the right femur are: 
Pee ee ee a oo ns Gals a a0, em. 
“Pate veree (immmetor al Mie Mest yo ee se ce i em 
PenGte 0) UnOmsiier CUAte oo ee as 4 om. 
Distance of its lower extremity from the proximal end of the bone..10 em. 
Diameter of the shaft below trochanter quartus, transverse....... oe em. 
Diameter of the shaft below trochanter quartus, antero-posterior... 2.2 cm. 
Diameter of the condyles, transverse........... Re ON ee oa ate 8. cm, 
. ae “antero-posterior at medial condyle ..... 4 cm. 
if nae ie (AOE CTS) Riese oe Olle rete 5.4 cm. 
a ee et = Ce URMODS Bein ga 3.4 cm. 
[vbia: A head of a bone (7 cm. long), with the greater part missing, I 
take for the proximal end of a left tibia. The bone is quite hollow at the 
break (Fig. 2). : 
