No. 386.) REMAINS FROM THE TRENTON GRAVELS. 149 
skull. The Riverview skull (Fig. 8) has an open metopic suture 
and is both lower and broader than the Trenton specimen.! 
An exhaustive comparison of the absolute measurements 
would lead to nothing; the indices are more suggestive. The 
Fic. 7. 
cranial index is, of course, the most important of these. In this 
respect the Trenton skull (Fig. 9) stands near the mean of the 
whole numbers represented in the table of measurements. 
The average cranial index of four female crania from Maryland,” 
described by Cope, is 75.1. These crania “ are inferably those 
of Nanticokes,’’? closely related, of course, to the Lenni Lenapé 
of the Delaware Valley. The index of the Trenton skull, 77.8, 
is well within the limits of mesaticephaly and is about the aver- 
1 Harrison Allen has described a Lenni Lenapé metopic cranium having a 
cranial index of 75, vertical 76, orbital 92, and nasal 53, Crania from the Mounds 
of vg ge e 408). ; 
Physical Characters of the Skeletons found in the Indian Ossu- 
ary on pe Cott Estuary, Maryla (p. 99). 
8 Mercer, H. C. Exploration of an Indian Ossuary on the Choptank River, 
Dorchester ae Maryland (p. 98). 
