Cope. ] 428 {March 1, 
The elongate coracoid resembles most, among recent Chelonians, the 
marine genus Chelone, while the sessile glenoid cavity and short pro- 
coracoid with open angle are entirely different. In these points this genus 
is more like terrestrial forms as T'estudo, or less like Hinys. 
Both humeri ave entirely preserved. They appear to have been some- 
what flattened by pressure ; but when unaltered they were no doubt flat, 
with stout proportions. They have a globular head with an immense 
trochanter which projects much beyond it proximally. The shaft is there 
much contracted, and expands again distally to the broad and very convex 
articular extremity. Opposite the narrow part of the shaft, the small 
trochanter appears on the inner side, forming an elongate ala. The long 
axis of the humerus is not straight, the proximal and ‘distal portion 
making an angle of 110° with each other. 
M. 
Total length. humerus (1 ft.) straight............ 2905105300 
Length i from -head.: 02.00.05. Re Pie Al, 296 
Wadthoat head: cei is. maa err Aes ee Cee 166 
be OL ce Or, A ERE WE Ra Ae OFF 
Least -width shaft... .....0.... roe ise ens BARES 076 
Greatest: distal width. c1-.. cocci ee Pains foe UBS 
Length basis little trochanter.......... POA ewe se 080 
Thickness at shalt. 00s bobs ecu ve ce woreteete PEL ORAS 
The flatness of this element and situation of the large trochanter in 
the general plane are characters of the Sphargididw ; the great constric- 
tion medially and expansion of both extremities remind one of the Mosa- 
saurotd humerus, 
Of bones of the fore arm there may be one, but the bones next in size to 
the humerus look more like metacarpals or metatarsals. Two of them 
were found together in position and their relative positions were not like 
those seen in the fore-arm of sea-turtles. They measure over seven inches 
in length, and are strongly concave on their adjacent sides. One of them 
is slightly concave on the outer side, the other convex, the convexity being 
at 2 the length from one end. The ends of both are a little expanded 
and one end of one displays a double or trochlear extremity. The same 
end of the other is injured by pressure. A. still larger metacarpal-like 
bone is relatively more expanded at the ends. The articular surface of 
one of these is wide at one end, and much narrowed at the other. The 
smaller bones, undoubtedly phalanges, are six im number. They are 
quite slender, a little expanded at the ends, and flat. 
M. 
Lenoth largest... ...55...: Yen sites atentente ee gee men Ua ols) 
Width do. at extremity...... Poe aes soy 00D 
ede ae Pei nt tee Sneie ec alpete eee Ube 
ength longest of pain. 60. ei. ieee eu a rerelds sie VOU: 
Width, CXGremliy ssc .vetes cbse stes cee tid reg ale gc OU 
ee shat, oc. ee eee Gas cen y ersOR 
