OF THE CAVES OF CRESWELL CRAGS. 



597 





Red Sand, 



Robin-Hood 



Care. 



447 a, College 

 of Surgeons. 



447, College 

 of Surgeons. 



Length of basisphenoid 

 Width „ 



Length of presphenoid 



Maxillaries in temporal width 

 Post orbital width 



107 



0-65 



10 



328 



155 



30 



2-56 



365 



10 



T25 



0-8 



10 



342 



1-8 



40 



332 



3-65 



11 



1-28 



0-8 



1-1 



34 



17 



32 

 35 



0-98 



Length of parietals 





Postorbital width of palatines 

 Width of posterior nares 



Both these fossil skulls have been gnawed by Hyaenas ; and the 

 smaller is so mutilated that it offers no measurements of value. 



The large number of teeth and jaws from the caves of Creswell, 

 amounting altogether to 1096 and 99 respectively (Robin-Hood 812 

 and 53 ; Church Hole 284 and 46), offers a wide basis of induction for 

 the determination of the amount of variation in the teeth of the 

 fossil Hyaena of the caves. So far as relates to their form, I have 

 nothing to add to the essay on the dentition published in the 

 4 Natural-History Review,' in 1865, which was founded mainly on 

 the large stores of remains furnished by the cavern of Wookey Hole. 

 The extremes of size, however, are greater, as may be seen from the 

 comparison of the following measurements (in inches) with those of 

 the above essa}\ 



Upper Molar Series. 



1. Antero-posterior length 



2. Transverse breadth 



3. Height 



1 . Antero-posterior length 



2. Transverse breadth 



3. Height 



1. Antero-posterior length 



2. Transverse breadth 



3. Height 



1. Antero-posterioV length 



2. Transverse breadth 



3. Height 



Hycena spcelea. 



H. crocuta. 



Max. 

 033 

 032 

 026 



0-62 

 0-48 

 0-46 



108 

 072 

 10 



1-8 

 0-94 



0-86 



Pir 



. 1. 



Min. 



Max. * 



026 



03 



025 



025 



025 



026 



Min. 



Pm. 2. 



0-58 



0-58 



0-48 



0-48 



0-51 



0-52 



Pm. 3. 



09 



0-9 1 



065 



0-68 



09 



0-96 f I 



Pm. 4. 



1-42 



1-5 



0-75 



078 





0-82 



0-71 

 0-60 



1-30 

 075 



* 4447, College of Surgeons. The socket of the true molar proves the latter 

 to have been bifanged. It is monofanged in 4447 a. This tooth is therefore 

 variable in character in the living H. crocuta. 



t Caged specimen. —Busle. 



