CRANIA FROM THE MOUNDS OF FLORIDA. 



405 



The descriptions of North American metopic skulls are herewith given : 



949 ?, Arickaree. Aged 21 years, — stenocephalia Figure 1. 



Glabella and supra-orbital ridge not prominent ; forehead rounded and full ; 

 outer part orbital arch oblique, 40°. — Nasal bones 25 mm. long, pantamorphic, 

 depressed ; frontal portion 4 mm. long. — Nasal vestibule macrolophic ; incisor 

 eminence none; spinal line trenchant, above level of floor of nose; alveolar line 

 none; premaxillary crest .complete, high spine, sharply projecting. Alveolus small. 

 — Hard palate parabolic, small, not flat, 

 Alveolar process high. Spinous process long, 

 overlapping sphenoido-tympanic suture. 

 — Petrosa moderately inflated ; cerebellar 

 fossa lies below the plane of the occipital 

 condyles. Foramen lacerum medium open. 

 — Malar bone enters into the spheno-maxil- 

 lary fissure ; marginal process small ; suture- 

 trace evident. Mortise seen at post-squa- 

 mosa. Lambdoidal suture serrated to 

 asterion ; small os incae. Temporal ridge 

 scarcely interrupted at stephanion. The 

 post-squamosal portion of the squamosa is 

 open. From these appearances it is con- 

 cluded that the individual had suffered 

 from otitis media with purulent invasion of 

 the mastoid region. Vertical suture in 

 middle of lachrymal process. The long 

 handle of the malleus fixed to posterior wall 

 of the tympanum. 



Fij= 



1.— Arickaree, 949 J 

 frontal suture. 



(Xorma frontalis.) 



showing persistent inter- 



1,2G4 9, Lenape. Aged 30 years, — stenocephalia Figure 2. 



Glabella small ; forehead rounded, full ; outer part orbital arch scarcely inclined. 

 — Nasal bones depressed, paedomorphic. Nasal vestibule analophic ; incisor emi- 

 nence rudimental ; ridge to spine discernible. Alveolar line scarcely, visible, not 

 marginal to anterior nasal aperture ; incisor crest developed posteriorly only ; nasal 

 spine single, inter-premaxillary suture carinate ; alveolus small. — Hard palate para- 

 bolic. Spinous and tympanic processes co-equal, the former not crossing the petroso- 

 sphenoidal fissure ; petrosa inflated. — Marginal process of malar bone and temporal 

 crests rudimentary. — Occiput pentagonal. — Skull rests on opisthion. Wormian 

 bones present in lambdoidal suture. — Ossa plana greatly deformed, uneven, with 

 ethmoid cells opening into orbit ; bulla ethmoidals present right and left. Lachry- 

 mal bone absent congenitally on right side; lost on left.' 



