ANOODON GOEEINGEI.— ANCODON PAEVUS. 189 



resembles the calcaneum of Diplopus figured and described by Kowalevsky*. The 

 dimensions (in centimetres) of this specimen are : — 



Greatest width from above downwards 5-7 



„ „ „ side to side 4-5 



Width of sustentacular surface 3-2 



M. 8516b. Portion of right calcaneum similar to last. Presented by W. E. de Winton, Esq., 1903. 



11.9224. Left cuboid. 



C. 7993. Eight calcaneum. Length 14'5 cm. 



C. 8387. Portion of left calcaneum. 



M. 8516 c. Proximal end of (?) the third left metatarsal. This bone seems to have interlocked with 

 the second metatarsal, as in Ancodon, as figured by Kowalevsky. The shaft of the 

 bone is much compressed from before backwards. The lateral (2nd) digit must have 

 been of considerable size. Presented by W. E. de Winton, Esq., 1903. 



C. 8894. A metapodial bone (? third metacarpal), 11*5 cm. long. 



C. 7990. Portion of metapodial. 



M. 9127. Distal ends of two metapodials. 



Ancodon parvus, sp. nov. 



[Text-fig. 62.J 



Type Specimen. — A portion of the right ramus of a mandible with m. 1 and m. 2 

 in situ, together with the empty alveolus of m. 3 (text-fig. 62) ; Geological Museum, 

 Cairo. 



This species differs from A. gorringei in its considerably smaller size. The molars 

 also differ in the following points : — (1) The cusps seem to be relatively higher ; 



(2) the cingulum is much more strongly developed on the posterior end of the tooth ; 



(3) the teeth are longer in proportion to their width; (4) the enamel is nearly smooth. 

 Possibly when more is known of this species it may be necessary to refer it to a 

 distinct genus. 



Form. & Log. — Fluvio-marine beds (Upper Eocene) : north of Birket-el-Qurun. 



C. 8821. Part of the right ramus of the mandible with m. 1 and m. 2 in perfect preservation. 



Type specimen (text-fig. 62). The depth of the jaw beneath m. 2 is 1'8 cm. The 



dimensions of the molars (in centimetres) are : — 



Length. Width. 



TO. 1 1-2 -6 



TO. 2 1-5 -9 



The length of m. 1 and m. 2 together is 2' 7 cm, ; in A. gorringei this measurement 

 is 3"8 cm. 



' On the Osteology of the Hyopotamidas," Phil. Trans, vol. 163 (1873) p. 53, pi. xxxv. fig. 4. 



