304 APPENDIX. 



are rounded and elevated aljove tlie flattened maxillaries, bend boldlj' out from tlie nasals, apjirox- 

 imating only in the anterior third of the beak, then continuing parallel, become flatter and wider, 

 and extend slightly beyond the maxilho.* 



The posterior angles of the maxillce are spatulate, the vomer is hidden by the mesethmoid 

 cartilage. Below, the vomer appears as a thin flat plate an inch wide, extending to the anterior 

 fourth of the beak. The palatines are broad, with the anterior lateral angles obliquely truncate ; 

 they have, on the whole, an abbreviated "dice-box" shajse. Their greatest length is 9.5 inches; 

 width at the anterior and posterior ends across the two, 10 inches. Their least width in the 

 middle, 8 inches. 



The length from the tip of the beak to the median notch of the inferior nares is thirty -eight 

 inches ; from the bottom of the notch to the posterior recurved process of the alisphenoid, four 

 inches; to anterior basi-occijiital suture, five inches — the middle of the otic bulla3 being in the 

 same transverse line. The anterior ends of the bullte are an inch from the recurved jJrocess of 

 the alisphenoid. 



The biilht! are very regularly ovoid, and smooth below; the lateral external edges have two 

 deep grooves separating three bulbous prominences. They were so attached by dried membranes 

 to the cranium that a fuller examination was impracticable. The width of the inferior surface of 

 the maxillfB, in the middle of the beak, is G.5 inches. The height of the narial septum, behind, 

 is 1.5 inch. Depth of brain cavity, 8 inches; height of orbit, 4.5 inches. The condyles of the 

 lower jaw are large and thick ; the rami are stout in projiortion to their length. There is no 

 angular process ; the coronoid process is sharp and high ; the dental foramen large, just before 

 the condyle. The inferior groove between the occipital condj'les is almost evanescent. 



Dimensions of cranium, in inches and decimals : 



Length of skull in a straight line 48 .00 



Breadth of condyles 4 .50 ? 



Breadth of ex-occii>itals (to outer edge of suture) 17 .00 



Breadth of squamosals 27 .00 



Height of foramen magnum 2 .00 



Length of supra -occijoital 13 .00 



Length of articular process of squamosal antero-posterior 8 .00 



Length of orbital process of frontal, right to left 10 .00 



Breadth of orbital from curved border of maxillary to hinder edge of orbital 



process of frontal 9 .00 



Breadth of orbital at upper surface of outer end G .50 



Nasals, length 4.50 



Nasals, breadth of the two at posterior end 1 _00 



Nasals, breadth of the two at anterior end 2 .50 



Length from curved border of maxillary to tip of beak 30 .00 



Length of maxillary 33 qq 



Projection of premaxillary beyond maxillary 1 .50 



Breadth of maxillaries at hinder end q qo 



Breadth of maxillaries across orbital jorocesses 12 .50 



Breadth of beak at base * -^q gg 



Breadth of beak at one -quarter its length from base 12 .00 



Breadth of maxillary at one -quarter its length from base 2 .50 



Breadth of premaxillar}^ at same ^Joint i qq 



Breadth of beak at middle g qq 



Breadth of maxillary at middle 2 50 



Breadth of j^remaxillary at middle j 5q 



* All meaBurements acroRs beak include the curve of the superior surface. 



