SCO Licut.-Col. S. R. Tickell on the Gibbon of Tcnasserim. 



werp Tertiary deposits, seems to warrant the assumption that 

 there existed previously, along the Suffolk coast, a Miocene and 

 a Pliocene deposit, the one abounding in terrestrial Manunalian 

 remains, as the Epplesheim strata, the other in Cetacean fossils, 

 as does the Middle Crag of Antwerp, and that the Red-Crag 

 sea (and the Coralline also to a less extent) has entirely denuded 

 and partially redeposited these strata in association with its 

 proper Molluscan fauna, and perhaps with some Mammals, 

 which, however, we are not able to designate. 



Before concluding this paper (for the errors and defects of which 

 I beg the reader's indulgence), I would wish to guard against 

 the supposition that any of the Mammalia assigned to the Red 

 Crag may have been obtained by mistake from the Mammali- 

 fcrous Crag. That deposit is never, so far as I am aware, met 

 with in superposition to the Red Crag ; and the dental remains 

 from it are light, absorbent, and unmincralized, as compared 

 with those from the lower bed. Moreover the species are very 

 widely different which occur in the two, the only common spe- 

 cies being the Mastodon angustidcns, which in both cases is cer- 

 tainly a derived fossil. The term " Mammaliferous " would 

 doubtless be more appropriate to the Red Crag than it is to the 

 much later Norfolk formation. 



EXPLANATION OF PLATE VIIL 



Figs. 1 & 4. Left iipjier canine of Ursus Arvernensis, Croizet & Jobert. 

 Ncwboiirn, Suffolk. 



Fiffs. 2 & 3. Otic bones of Delphinus uncidens, Lankester. Wooclbridge. 



Fiff. 5. Left upper premolar of Castor veterior, Lankester. Sutton, Suf- 

 folk. 



Fig. 6. Incisor of the same. Suffolk. 



Figs. 7 & 8. Left second premolar (lower jaw) oi Hyana antiqua. Lank. 

 Felixstowe. 



Fig. 9. Crown of premolar of C. veterior ; enlarged. 



Fig. 10. „ „ C. Canadensis. 



Fig. 11. Canine of Canis primigenius, Lankester. 



Figs. 12 & 13. Teeth of Delphinus uncidens, Lankester. Felixstowe. 



Figs. 14, 15, 16. Tooth of Phoccena orcoides, Lankester. Near Sutton. 



Figs. 17 & 18. Ditto. Ditto. 



XL. — Note on the Gibbon of Tenasserim, Hylobates Lar. 

 By Lieut-Col. S. R. Tickell, in a letter to A. Grote, Esq.* 



I SEND a transcript from my Mammalian collection of what I 

 had recorded of Hylobates Lar, at least of its wild and tame 

 habits. Notes on its osteology, and soft anatomy, and structure 

 you will not require, as you have a specimen by you, which I 

 * From the Journal of the Asiatic Society, No. II. (1864). 



