BRITISH FOSSIL SPECIES 



127 



Fig. 6. 



Fia. 64. — -Lower molars of Cromerian species of Pilymys^; all from the 

 Upper Freshwater Bed at West Runton with the exception of fig. 12. 



1. Pilymys arvaloides Hinton. Left jWj and m^ {Savin Coll., No. 656.5). 



2. P. arvaloides. Left vi^ {Savin Coll., No. 8.38). 



3. P. arvaloides. Left m^ {Savin Coll., No. 8.35). 



4. P. arvaloides. Left m^ {Savin Coll., No. 8.37). 



5. P. arvaloides. Left 7rti {Savin Coll., No. 656.6). 



6. P. arvaloides. Left Wj and jWj {Savin Coll., No. 491.6). 



7. P. arvaloides. Left Wj and m^ {Savin Coll., No. 8.28). 



8. P. arvaloides. Right wij with vestige of cusp 2 {Savin Coll., No. 656.2). 



9. P. arvaloides. Right m^ (Savin Coll., No. 8.28). 



10. P. arvaloides. Left wij. 



11. P. gregaloides Hinton. Left Wj, in^, type (B.M., No. 12345; Hinton 



12 



15. P. gregaloides. 



16. P. gregaloides. 



17. P. gregaloides. 



18. P. gregaloides. 



Right wij, Kent's Cavern (B.M., No. 15084a; McEnery 



Coll. 

 P. gregaloides. 

 Coll.). 



13. Pilymys sp. Left m, {Savin Coll., No. 8.30). 



14. P. gregaloides. Left Wj {White Coll.). 

 Right Ttii {Savin Coll., No. 8.24). 

 Left w,. 



Left TOi {Savin Coll., No. 8.26). 

 Left nil *f"l "*2 {Savin Coll., No. 491.5). 



' For diagnoses of these species see Hinton, Ann. Mag. N.H., [9], 12, 

 p. 541, 1923 ; a full account is given in Vol. II of this Monograph. 



