6 Bulletin American Museum of Natural History. (Vol. XXXIV, 
Chriacus galline sp. nov. 
Mi, ) pee a 
BPE 
No. 16223 
Ae ek 7 
Fig.1. Chriacus galling, upper and lower teeth of type specimen, natural size, crown and 
outer views of mi-2, p?-m2, and inner and outer views of upper canine. Almagre beds, Wa- 
satch formation of San Juan Basin, New Mexico. 
Fig.2. Chriacus galline, parts of limb 
bones and fore foot, natural size: 1, distal 
ends of tibia and fibula; 2, radius and 
ulna, a, head of radius, b, distal end of 
radius; 3, dorsal view of carpus and 
metacarpus, lacking cuneiform and ends 
of three metacarpals: 4, phalanges, dor- 
sal and lateral views. All from the type 
specimen. 
Type, No. 16223, upper and lower teeth, 
fore feet and various skeleton fragments, 
from the lower division of the New Mexican 
Wasatch. 
Specific distinctions: Size of C. pelvidens; 
paraconid of lower molars stronger, more 
internal in position; external cingulum of 
upper molars weak; p* without deuterocone 
and protocone of more trihedral form. 
Diagnosis -of skeleton parts. The head 
of the radius is round oval, not flattened; 
the bicipital tubercle elongate, not promi- 
nent; the distal end of radius trihedral, 
styloid process weak. The olecranon is 
short, expanded laterally, not deep; sigmoid 
cavity rather shallow. Scaphoid, lunar 
and centrale separate, the scaphoid shallow, 
centrale larger than in Oxyzenide other- 
wise similar, trapezoid wider and deeper 
than in Oxyzenide and Miacidex, trapezium 
smaller and more quadrate, lacking the 
inferior peg characteristic of the Arcto- 
cyonidz and present to a less extent in 
the other families. The magnum is high 
and narrow, its proximal keel compressed 
and obliquely set in relation to the body. 
The unciform is of moderate height 
with a rather narrow subproximal lunar 
facet. 
The metacarpals are five in number, the 
) fifth having the most robust shaft, me.I the 
most slender; ‘me.II is considerably longer 
than me.V, the shaft somewhat slenderer; 
the shafts of me.III and IV are smaller, 
that of me.I much smaller, but their lengths 
are not preserved. 
The phalanges are very like those of 
