20 



PROCEEDINGS OF THE NATIONAL. MUSEUM 



vol.. 60 



Mea Sill em cuts of the .s7>»// — Cuiuinued. 



mm. 



Distance between inner margins of maxillae at vertex 65. 5 



Greatest breadth of supraorbital process of frontal 71 



Greatest thickness of frontal and maxilla combined near center of 



orbit 19. 5 



Maximum width of exposed portions of combined frontals on vertex_ 102 



Greatest length of exposed portion of left frontal at vertex 27 



Anteroposterior diameter of left nasal (along suture) 19 



Transverse diameter of left nasal 24. 5 



Least breadth of cranium between temporal fossae 144. 8 



Greatest height of temporal fossa 56. 5 



Distance from vertex to upper margin of foramen magnum 06 



Height of foramen magnum (crushed) 23 



Width of foramen magnum (cru.shed) 35.5 



Greatest distance between the outer margins of the occipital condyles— 80. 5 



Greatest height of right condyle 49.5 



Greatest breadth of right condyle 27. S 



Greatest length of right zygomatic process 99. 5 



Breadth of skull across exoccipitals 186.8 



Greatest vertical depth of skull in front of nares 83 



Breadth across posterior ends of descending processes of basioccipital. 92 



Breadth across anterior ends of descending processes of basioccipital- 54, 4 



Figs 1-4. — Teeth or Eurhinodelphis bossi. Cat. No. 8842, U.S.N.M. X 3. 1. An- 

 terior VIEW OF TOOTH. 2. POSTERIOR VIEW OF A TOOTH. 3. POSTERIOR VIEW OF 

 AN ANTERIOR TOOTH. 4. LATERAL VIEW OF A POSTERIOR TOOTH, APEX OF CROWN 

 MISSING. 



Unfortunately at least 12 of the posterior teeth and all of those 

 in front of the tooth assumed to be the fifty-first on the left side; 

 are missing. Those that are present possess some interesting pecu- 

 liarities. All of these teeth are compressed in an anteroposterior 

 direction and progressively show a slight increase in height and 

 thickness posteriorly. The teeth of Priscodelphinus productus as 

 described by Du Bus ^^ are apparently flattened in an anteroposterior 



»>* Du Bus, B., Bull. Acad. Scl. de Belgique, ser. 2, vol. 34, No. 12, p. 492, 1872. 



