Eastman. — Mylostoma. 



PLATE 3. 



Lower Dentition of Mylostoma. 



Figs. 19, 20. Oral aspect of lower dental plates belonging to the left ramus of the 

 mandible in Mylostoma variabile Newb. Both specimens are preserved 

 in the Museum of Comparative Zoology (Cat. Nos. 1429, 1431) and 

 have been previously figured in Plate 15 of Newberry's Monograph. 

 Natural size. 



Fig. 21. Oral aspect of left mandibular ramus of Mylostoma terrelli Newb. This 

 is the type and only known example ; it is preserved in the Museum 

 of Comparative Zoology (Cat. No. 1430). X f. 



