PATAGONIAN EXPEDITIONS: PAL/EONTOLOGY. 



PAGE 



Fig. 22a. SPANIOMYS RIPARIUS : Left upper teeth, X f. A. M. N. H.No. 9,529. 410 



Fig. 23. " " Left lower teeth, X f. No. 15,577 . . 411 



Fig. 24. SPANIOMYS BIPLICATUS, type : Right lower teeth, X f. Amegh. coll. 412 

 Fig. 25. GYRIGNOPHUS COMPLICATES, type : Right lower teeth, X ^. Amegh. 



coll. ........... 409 



Fig. 26. GRAPHIMY^ PROVECTUS, type : Left lower teeth, X f. Amegh. coll. 413 



Fig. 27. LOMOMYS INSULATUS: Right upper teeth, X f . Amegh. coll. . 403 



(VOL. v) 



