22() MIOCENE TERTIAUV ROCKS — WESTON. 



delpliia, who in his vahiable ilhistrated (luartomeiuoirs describes 

 portions of" twenty-five species of fish, tortoise and mammals. 

 Among- the remains described is an anterior vertebra of a fish 

 belonging to the Amiida3 family. It has received the name 

 Amia Whiteavesina, having been dedicated to Mr. Whiteaves, 

 pala3ontologist to the Geological Survey of Canada. 



Prof. Cope states : " They occur abundantly in the Bridger 

 Eocene, but have not been known from later formations till dis- 

 covered by Mr. Weston in the Cypress Hill Oligocene beds." 

 It is interesting to know that this species occurs in the agglo- 

 merate band (6 of section) in which are also found the remains 

 of Menodus (ingustigenis, Cope, which name applies to the 

 largest hoofed animal yet found in the Miocene deposits of 

 Canada. It is an extinct rhinoceros. Of this genus we have in 

 the Geological Museum the largest part of the cranium of what 

 appears to have been an adult individual. The supraoccipital, 

 occipital condyles, zygomatic arch, a large portion of the left 

 upper maxillary, with two large molars, are well preserved. 

 Situated on either side of the nasal-bone are two horn-cores, 

 making a striking difference between this species and animals 

 Avith the horns posterior to the eyes. The brain-cavity is small 

 for so large an animal, being only 5x4^ inches, while the width 

 from between each side of the lateral crest is 12 inches. The 

 grooves for the branches of the meningeal artery are larger and 

 better developed than in the human cranium. 



Belonging to the same genus, there are in the museum cases 

 of the Geological Survey large portions of the lower jaws, large 

 portions of the superior maxillary bones with eight molar teeth, 

 several femurs, one almost perfect humerus, several tibia3, por- 

 tions of the pelvic arch, a number of the vertebrae, and numer- 

 ous small bones. One of the most interesting specimens from 

 the agglomerate beds (b of section) is an almost perfect left 

 mandibular ramus of an extinct wild boar, Elotheriumi 

 arctatum, Cope. This specimen is in a small block of conglom- 

 erate, only one side is seen. The teeth are beautifully preserved, 

 and the whole shows that the creature was of much larger pro- 

 portions than the existing boar. 



