296 REPORT ON AN ADDITIONAL COLLECTION OF SKELETAL 
— 2 
PATELLA—THE VASTUS EXTERNUS NOTCH 
Ру Рона Р ЕРЕ — ا‎ E 
ARKANSAS LOUISIANA TOTALS 
Males Females Males Females Arkansas Louisiana ren Females 
Right| Left | Right| Left Right] Left Right) Left | 
Number of specimens 7 6 3 — 8 10 8 7 | 16 33 ЗІ 18 
ехатіп 
Notch absent 4 2:059 — | 2 5 6 6 50% 58% 45% | 724 
Trace 1 о К» — | 1 3 1 1 31% 18% 23% | 22% 
Small 1 = | — |] 4 1 1 - 6% 18% 19% | 6% 
Moderate — — | — — 1 1 -- -- — 6% 6% аа 
Pronounced ` 1 1 — — -- -- -- -- 13% — 6% Eon 
The Os Cales. 
There are 23 pairs of these bones sufficiently preserved to be measured. Their 
dimensions, as well as their breadth-height index, differ but slightly in the two 
localities, The bones also differ very little on the two sides, the right bone being 
on the average very slightly the larger. The female bones, however, are decidedly 
smaller than those of the males.. 
The measurements and indices form an interesting basis for future comparison. 
Os CALCIS: AVERAGE DIMENSIONS AND BREADTH-HEIGHT INDEX 
ARKANSAS 
MALES FEMALES 
Proportions * 2d 
Num- Num- Num- Num- 
ber of Right ber of Left ber of Right ber of Left 
speci- speci- speci- speci- 
mens mens en mens 
Length (maximum), cm. 6 (7 845) 6 (7 385) 1 6.9 1 6.9 
Breadth (minimum at Es 2:4 
middle of body), сш. 6 | (25295) | 9 | (25529) | ! 2.4 1 2.4 
Height (maximum at 4.0 | If 
middle of body), сш. О EE S | (3864) | 1 3.55 1 3.4 
Breadth-height index 67.7 | 69.5 70.6 
(eed X ие) Оран l Haeo SE 
height | 
* Pairs only. 
