PATAGONIAN EXPEDITIONS: ZOOLOGY. 



EXPLANATION OF PLATE X. 



OxYMYCTERus, Eligmodontia, and Oryzomys. 



PAGE 



Fig. i-id. O.XYMYCTERUS APiCALis : Type skull, 9 ad.; .skull, Xf ; teeth, 

 X ^ ; teeth greatly worn. Inca Mines, Peru. Am. Mus. No. 

 16,064. 



Fig. 2-2a. Eligmodontia morgani : Upper and lower teeth of J* ad., x f ; 

 teeth much worn. Skull figured on Plate IX, Fig. i-ili. 

 Rio Coy, Patagonia. U. S. Nat. Mus. No. 92,218 . . 53 



F'g- 3-3^- Elig.modontia morga.m : Upper and lower teeth of 9 juv., with 

 unworn teeth, for comparison with Fig. i. Rio Coy, Pata- 

 gonia. U. S. Nat. Mus. No. 92,226. 



Fig. 4-4^. Oryzomys magellanicus : c? ad.; upper and teeth, much worn, 

 Xf U. S. Nat. Mus. No. 84,275. Skull shown in Plate IX, 

 Fig. 2-2(J .......... 47 



FJg- 5-5^- Oryzomys magell.\nicus : 9 juv.; upper and lower teeth, un- 

 worn, X f . Upper Rio Chico, Cordilleras, Patagonia. U. S. 

 Nat. Mus. No. 84,263. 



Fig. 6-6a. OxYMYCTERUs lanosus : Upper and lower teeth, 9 adx f. Skull 



figured on Plate IX, Fig. T^-^d 83 



Fig. y-ya. Oxymycterus microtis : Type, upper and lower teeth, c? ad., 



X f Skull figured on Plate IX, Fig. 4-4(5 .... 84 



Fig. 8-8a. Oxymycterus ixca : Type, upper and lower teeth, cJ* ad. ; teeth 

 very much worn, X f . Skull figured on Plate IX, Fig. 5-5<J. 



Fig. g-ga. Oxymycterus juliac.e : Type, upper and lower teeth, much 

 worn, d^ ad., X |. Skull figured on Plate IX, Fig. 6-6/5. 



Fig. lo-iort'. Oxymycterus apicalis : Upper and lower teeth, unworn, for 

 comparison with worn teeth, Fig. ic-id of this Plate. 9 

 juv., X|. Inca Mines, Peru. Am. Mus. No. 16,067. 



(vol. hi) 



