40 



VEETEBKATA. 



No. 149. Mastodon giganteus, Guy. 



Lower Jaw. This was found in St. Catherines, Canada West, and is pre- 

 served in Burnet's Museum, Table Rock, Niagara. 



Size, 3 ft. 2 in. s 2 ft. 7 in. Price, $4.00. 



No. 150. Mastodon Borsoni, Hays. 



Lower Jaw. This species was founded on the supposed absence of the 

 longitudinal cleft along the sumniit of the molars. It is a " Trilophodon." The 

 specimen was found in the Upper Pliocene, Vialette, Department of Haute-Loire, 

 France, and is in the Museum of Natural History at Lyons. 



Size, 24x18. Price, $8.00. 



No. 151. Mastodon Arvernensis, Croizet and Jobert. 



Lower Jaw. This lower jaw of the Auvergne Mastodon was found in the 

 Pleistocene sands of Montachita, Italy. It lacks both condyles, but shows the 

 nascent dentition of the third molar teeth. The original is in the Museum of the 

 University of Pisa. Size, 15 x 14. Price, $5.00. 



No. 152. Mastodon longirostris, Kaup. 



Lower Jaw, right ramus, fragment. This species is characterized by 

 three narrow molars in each ramus, and especially by the prolongation of the 

 lower jaw which carries a pair of tusks only slightly deflected from the line of 

 the grinders. It is distinguished from Jf. angustidens, Cuv., by a more complex 

 last molar tooth. It is a " Tetralophodon," since the first and second true molars 

 have foui* ridges. The remains are almost entirely confined to the Upper Miocene 

 sands of Eppelsheim ; this specimen was found in the Middle Miocene near Lyons, 

 France, and belongs to the Museum of Natural History in that city. It contains 

 the deep sockets for the tusks. Size, 14 x 8. Price, $3,00. 



No. 153. Mastodon giganteus, Cuv. 



Lower Jaw, right ramus. This fragment was found in Missouri, and is 

 in the Royal Museum of Berlin. Size, 28 x 14. Price, $4.00. 



No. 154. Mastodon Andium, Cuv. 



Lower Jaw, left ramus. This species has four-ridged molars (Tetra- 

 lophodon), and one or two large inferior incisors. A distinctive feature of its tusks 

 is a strip of enamel two inches broad, lengthwise along their outer side. The 

 specimen was found in the Miocene strata of the Sewalik Hills, India, and is in 

 the British Museum. Size, 30x14. Price, $5.00. 



No. 155. 



Mastodon giganteus, Cuv. 



Molar. This fine specimen was 

 found at the celebrated locality of Big 

 Bone Lick, Ky. (Pleistocene), and is now 

 in the Ward Museum, University of 

 Rochester. It shows in the unusual 

 perfection the cusps, the alveolar line, 

 and the long, curved fangs of the tooth. 

 The enamel is little worn, and is as 

 bright as in the teeth of living animals. 

 Size, 7x6. Price, $3.06. 



