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Show 1902.] ON T H E OSTEOLOGY OP T H E FALCONIFORMES. 277 5. PATAGONIAN CAVY. (Dolichotis patagonica.) (Called "Cavy" or " Hare" indiscriminately by the English settlers; Liebre by the Chilians and Argentines; Paahi by the Tehuelches.) The River Deseado forms the southern limit of the distribution of the Patagonian Cavy. In 1833, Darwin writes, concerning the Cavy: " They are found as far north as the Sierra Tapalguen (lat. 37° 30'), and their southern limit is between Port Deshe and San Julian, where there is no change in the nature of the country." So far as m y experience goes, I never observed a Cavy after 23rd October, upon which day I counted fourteen upon the pampa between Lake Musters and the settlement of Colohaupi. The residents at Colohaupi informed me that that place formed the southern limit of distribution of the Cavy. It is of course impossible to lay down an exact line, but I think I am safe in saying that the range of the Cavy does not extend south of the 46th parallel. This limit is the more remarkable inasmuch as the country south of lat. 48° does not in any way materially differ from that over which the Cavy is commonly to be met with. It is upon patches of dry mud that these animals are most often to be observed. 6. LITTLE ARMADILLO. (Dasypus minutus.) (Pichy of the Chilians and Argentines ; Ano of the Tehuelches.) This Armadillo is never found south of the River Santa Cruz. During the four months I spent south of that river I did not see one, but when, for three days, we crossed to the north bank, we met with four and killed one. Dasypus minutus is very common in the vicinity of the Bahia Camerones. I saw no specimen in the forests of the Andes, but near Lake Buenos Aires and Lago Viedma we found them at the foothills. 6. Contributions to the Osteology of Birds. Part V. Falconiformes \ By W . P. P Y C R A F T , F.Z.S., A.L.S. [Received March 4, 1902.] (Plates XXXI.-XXXIII.2 & text-figures 33-37.) CONTENTS. vii. The Pectoral Limb, p. 306. viii. The Pelvic Limb, p. 307. ix. Summaiy, p. 311. x. Key to the Osteology of the Falconiformes, p. 318. xi. Explanation of the Plates, p. 319. i. Introductory Eemarks, p. 277. ii. The Skull of the Adult, p. 278. iii. The Vertebral Column, p. 292. iv. The Ribs, p. 295. v. The Sternum and Pectoral Girdle, p. 296. vi. The Pelvic Girdle, p. 301. i. INTRODUCTORY REMARKS. The anatomy of the Falconiformes presents many characters in 1 For Part IV. see P. Z. S. 1899, p. 1018. ; For explanation of the Plates, see p. 319. |
