ELBPHAS PRIMIGENIUS.— TRUE MOLARS. 117 



■which are said to have been discovered in the same deposits by the Rev. R. Macdonald. 

 An entire lower last molar of the left ramus, No. 44,060, holds x 20 x in 9 X 3^, and eight 

 ridges in a space of 5 inches. The tooth, as usual in Arctic specimens, has very thin 

 enamel, but the cement is in great excess. There is very faint crimping of the thread- 

 like machaerides of the former. A fragment of a nearly worn-out crow^n of a true molar 

 of another individual shows a similar condition of its constituents, whilst the astragal has 

 the projecting posterior and inner angle of the species, and represents a rather small indi- 

 vidual. Some of the bones appear to have been gnawed, Mr. Davies had carefully 

 compared the remains of the Bison with the European fossil species, and was unable 

 to make out differences. Similar remains of the latter species are contained in Kellet's 

 collections, in the British Museum, from Kotzebue Sound, and also from Eschscholtz 

 Bay, where Mammoth remains are plentiful. 



The presence of x 21 x in lower ultimate molars is demonstrated by a rolled specimen 

 from Siberia, in the British Museum. It is 11x2 inches in width and is somewhat 

 arcuated. The enamel is thin, with slight crimping and rather an excess of cement, 

 eight ridges being contained in 3j inches. This tooth, although much attrited by roUing 

 possibly in the bed of some mountain torrent, is altogether remarkably narrow for that 

 of a Mammoth. 



Dr. Bree's collection contains a dredged specimen, from the East Coast, of an 

 ultimate molar, which holds x 22 x in 9| X 2^ inches. 



No. 40,699, B. M., a crown view of which is shown in Plate XIV, fig. 3, is one 

 of the " waifs and strays " either cast ashore by the waves or fished up by the troll 

 net. It is remarkable for its rather thick enamel, and the plates are much digitated, 

 and the crown considerably arcuated. It holds x 22 x in 11|X 2-8 inches, and contains 

 eight ridges in 4^ inches. It is recorded in the Catalogue as having been " dredged off 

 Cromer Eorest bed." 



A tooth from the Dogger Bank holds x 22 x in 8^X 2-6 inches and contains eight 

 in 3-1 inches. It is remarkable for its small size, and is therefore exceptional as com- 

 pared with the other ultimate molars from the above-mentioned shoal ; even a inolar 

 which has evidently lost only its anterior talon holds 22 x in 11^x3^ inches, and con- 

 tains eight in 3*6 inches. In both the enamel is thin. 



The Dogger Bank Collection furnishes two specimens of lower molars with a ridge 

 formula of x 23 x each. One is 13x3 inches and contains eight in 4-4 inches. The 

 plates are rather thick for the size of the tooth, which is 4^ inches longer than the 

 first mentioned. There is, as usual in Dogger-Bank teeth, no crimping of the machserides. 

 The crown is arcuated. The other tooth is llf X 3 inches and contains 8 ridges in 3-9 

 inches. Here the enamel is thin, as usual in its companion molars from the above 

 situation. The crown is much arcuated. 



In the collection of Dr. Bree, I noticed a molar holding x 23 x, recorded to have been 

 dredged off Dunkirk. It was 9 inches in length and " //«';2-plated." 



16 



