J. B. Hatcher — Geology of Southern Patagonia. 343 



that time I had not seen Dr. Ameghino's article entitled 

 "Notes on the Geology and Paleontology of Argentina,"* in 

 which he gives the first notice of marine deposits, found in 

 this region, overlying the Santa Cruz beds. My observations 

 regarding the relations of these marine beds to the Shingle 

 formation (Tehuelche formation of Ameghino) do not agree 

 with those of Sefior Carlos Ameghino. Dr. Ameghino, on 

 page 17 of the paper just cited, after quoting at some length 

 from a letter from Carlos Ameghino, concludes: "According 

 to this the bowlders were deposited at the bottom of the sea, 



Fig 4. Front view of metatarsals of Diadiaphorus majusculusf Amegh. from 

 No. 15107 Princ. col., fig. 4a : view of distal end of metatarsal IIT, showing great 

 development of metapodial keel. 



Fig. 5. Crown view of sup. dentition of Diadiaphorus majusculus ? Amegh. 

 from No. 15101, Princ. col. 



and over them there extended at other periods a vast forma- 

 tion of marine shells, of which there only remains diminished 

 traces at certain definite spots." This is exactly the opposite 

 of what I observed near Cape Fairweather on the coast, where 

 there is a splendid continuous section from the Shingle forma- 

 tion through the Cape Fairweather beds and some 300 feet of 



IAm. Jour. Sci. 



*See G-eol. Mag., January, 1897, pp. 4-20. 

 -Fourth Series, Vol. IV, No. 23.— Nov., 1897. 



