150 HY.ENA. 



By its small size, this tooth confirms the deductions 

 from other anatomical characters of the closer affinity of 

 the extinct Hyaena to the spotted than to the striped spe- 

 cies of the present day; and, in its rounded form, M. de 

 Blainville sees a confirmation of the specific distinctness of 

 the Hyaena spelaea from the Hyana crocuta, in which the 

 small tubercular molar has a subtriquetral crown. The 

 skull of the Hyaena crocuta now before me manifests an- 

 other distinction in the double fang by which the small 

 tubercular molar is implanted in the jaw, whilst that of 

 the Hyaena spelaea was inserted, as M. de Blainville re- 

 marks, by a single fang. 



Baron Cuvier has particularly cited the discovery of 

 the Hyaena's remains in the diluvium at Lawford, near 

 Rugby, as a proof of that Carnivore having been associated 

 in England, as on the Continent, with the Rhinoceros, 

 Mammoth, and other great extinct Pachyderms of the 

 unstratified drift formations. 



Several instances of the same nature have been subse- 

 quently brought to light. Mr. Murchison, in his great 

 work, " The Silurian System," notices the association of 

 the Hyaena with the Rhinoceros in a fissure of the Ay- 

 mestry limestone, constituting one of the vertical joints of 

 the rock, which had been irregularly opened out by an- 

 cient disturbance of the beds, and subsequently filled by 

 the drift and detritus of the superficies. " These jointed 

 rocks form the eastern side of a deep comb, the higher 

 parts of which are occupied by the upper Ludlow rock ; 

 the lower by the Aymestry limestone, which, where it 

 contains the bones, is about forty feet above the little brook 

 that waters the valley. In extracting the limestone for 

 use, these fissures were perceived to be filled with cal- 

 careo-argillaceous cement of a whitish colour, like hard- 



