1856.] OWEN — RED CRAG MAMMALS* 229 



The following extinct species of Delphinus are given b}^ M. Gervais 

 in the * Paleontologie Fran9aise ' : — 



D. pseudodelphis, from the miocenc molasse at Vendargues ; 



D. Dationum, from the miocene formation at Dax ; and 



J). Renovi, from the miocene molasse of the Departement de I'Orne. 

 M. Pictet refers the formation in which were found the fossil Ziphius 

 longirostris of Cuvier (JDioplodon, Gervais) to the marine molasse 

 of the miocene period. 



Conclusion. — From the foregoing details it will be seen that the re- 

 searches now applied during fifteen years to the mammalian fossils of 

 the Red Crag of Suffolk have led to the very interesting result, that tlie 

 majority of them are identical, or closely correspond, with miocene 

 forms of Mammalia, and especially with those from the Eppclsheim 

 locality, described by Prof. Kaup. In Suffolk, as in Darmstadt, 

 we find the Mastodon longirostris. Rhinoceros Schleiermacheri, 

 Tapirus priscus, Sus palccoclioerus, and Co'vus dicranocerus, associated 

 together, in the same formation ; and, with these miocene forms of 

 extinct Mammalia in the Red Crag, we have, likewise, a Cetacean 

 which most closely resembles a miocene species of that order, pre- 

 viously recognized in the crag or molasse of the continent. At the 

 same time there are, as e. g. in the Megaceros, specimens of newer 

 pliocene or pleistocene forms of Mammalia mingled with the older 

 tertiary species ; whilst on the other hand eocene forms of fish, as 

 e. g. Edaphodon, with Myliobatidce and eocene Crustacea, have been 

 obtained from the Red- crag pits. 



As, however, several of the Mammalia which occur in miocene 

 formations are also found in the older pliocene deposits in parts of 

 France, it would be rash, perhaps, to pronounce positively on the 

 miocene age of any of the above-cited crag-fossils ; but it is certain 

 that the majority of those mammalian fossils, and by far the greatest 

 proportion of individual specimens, belong to an older tertiary period 

 than the Mammalia of the newer pliocene drifts, gravels, brick- 

 earths, and bone -caves. 



DESCRIPTION OF THE FIGURES. 



Fig 1. Grinding surface of right upper molar (probably the third) of the Rhino- 

 ceros Schleiermacheri ? (From a Crag-pit, Wolverton, Suffolk ; 

 communicated by W. C. Maclean, Esq., Collector of Customs at 

 Woodbridge.) 

 Fig. 2. Grinding surface of the inner portion of the crown of a right upper molar 

 of the Rhinoceros Schleiermacheri ? (From a Crag-pit, Felixstow ; 

 communicated by George Ransome, Esq.) 

 Fig. 3. Grinding surface of a left upper molar of the Rhinoceros Schleiermacheri ? 

 (From a Crag-pit, Felixstow; communicated by W. C. Maclean, Esq.) 

 In these upper molars are marked — a the hinder valley, b the inner or 

 front valley, c the inner end of the front lobe, c the inner end of the back 

 lobe, d the front angle, d' the ridge, d" the back angle of the outer sur- 

 face,/ the cingulum or basal ridge. 

 Fig. 1. Grinding surface of a right lower molar of the Rhinoceros Schleiermacheri ? 

 (From a Crag-pit, Sutton ; communicated by W. C. Maclean, Esq.) 



