1902.] 



O^r THE OSTEOLOGY OP THE FALCONIFORMES, 



277 



5. Patagonian Oavy. {Doliehotis patagonica.) 

 (Called " Cavy " or " Hare " indiscriminately by the English 

 settlers; Liehre by the Chilians and Argentines; Paahi by the 

 Tehuelches.) 



The River Deseado forms the southern limit of the distiibution 

 of the Patagonian Cavy. In 1833, Darwiia \\aites, concerning 

 the Cavy : " They are found as far north as the Sierra Tapalguen 

 (lat. 37° 30'), and their southern limit is between Port Desire 

 and San Julian, where theie is no change in the nature of the 

 country." So far as my experience goes, I never observed a Cavy 

 after 23rd October, uj)on 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 distiibution 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 remai'kable iirasmuch as 

 the country south of lat. 48° does not in any way mateiially 

 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 mimttus.) 

 {Pichyoi 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 minuhcs 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. Pyceaft, F.Z.S., A.L.S. 



[Received March 4, 1902.] 

 (Plates XXXI.-XXXIII.- & text-figures 33-37.) 



Contents. 



i. Introductorj' Remarks, 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. 



vii. The Pectoral Limb, p. 306. 

 viii. The Pelvic Limb, p. 307. 



ix. Summary, p. 311. 



X. Kej' to the Osteology of the 

 Falconiformes, p. 318. 



xi. Explanation of the Plates, p. 319. 



i. Introductory Remarks. 

 The anatomy of the Falconiformes presents many characters m 



1 For Part IV. see P. Z. S. 1899, p. 1018. 

 " For explanation of the Plates, see p. 319. 



