Beckengürtel von Zeuglodon etc. 
451 
Im Jahre 1894 entdeckte Schuchert einen zusammenhängen- 
den Komplex von 24 Wirbeln, sowie Scapula, Humerus, Eadius 
und Ulna des Zeuglodon cetoides , welche bisher noch nicht ein- 
gehend beschrieben wurden. Zwei Jahre später fand Schuchert 
im Choctaw County (Alabama) 35 zusammenhängende Wirbel des- 
selben Archaeoeeten und in der Lendenregion dieses Skelettes drei 
Knochen, welche F. A. Lucas als die beiden Hüftknochen und 
das rechte F emur von Zeuglodon cetoides beschrieb. 
Da die Wirbelsäule nur geringe Störungen in ihrer Lagerung 
zeigte und die fraglichen Reste der Hinterextremität in der Nähe 
jener Stelle der Wirbelsäule eingebettet waren, wo das Becken 
vermutet werden durfte , so erklärte Lucas die beiden auf PI. V 
und VI seiner Mitteilung abgebildeten Knochen für die Hüftbeine 
und deu auf PI. VII dargestellten Extremitätenknochen für das 
rechte Femur von Zeuglodon cetoides. 
F. A. Lucas zog das Becken der Pinnipedier zum Vergleiche 
heran und erklärte: „The pelvis of the eared seals, Otariidae, 
seems so throw the rnost light on the morphology of the pelvis 
(just as the skull of Eumetopias was of the most Service in 
restoring the craniiun) , and by its aid we are able to say that 
iliuui , ischium , and pubis are all present , although the ilium is 
almost aborted and the component bones are fused in one. The 
pectineal process , whicli is large , arises front the ilium, and not 
the pubis , as is shown by the pelvis of a young für seal. The 
obturator foramen is large , and seems , in spite of degenerate 
condition of the pelvis , to have been traversed by a large iliac 
artery. 
„The acetabulum is of good width and deptli, exceeding in 
size that of a male for-seal, Callorhinus, and nearly equaling 
that of a fully grown female sea lion, Eumetopias.“ 
„There is an irregulär, roughened depression, as if for a 
ligamentum teres, although it is a little difficult to see the necessity 
for a ligament in so degenerate a pelvis as that under con- 
sideration.“ 
„Found near the nineteentli vertebra was a small, slender 
bone suggesting a fernur and so considered. There is no articular 
surface at either end, one extremity, which is slightly weathered, 
having been apparently capped with cartilage, the other having 
lost a portion while being takeu away front tlie matrix. Found 
near the twenty-second vertebra, however, was a rounded fragment 
of bone of the proper size and shape for a portion of the head 
of the fernur, and if the broken part of the supposed fernur were 
to be restored after this fragment, it wottld harmonize with the 
os, to which it is believed to have belonged.“ 
„If the interpretation on this bone be correct, it will be 
seen that a large third trochanter is present“ (1. c. p. 329—330). 
29 * 
