Recently published Omitholoyical Works. 653 



stated after due examination, but perhaps the idea is not 

 quite so novel as the author appears to consider it. 



94. Loudon on Tiro new Paleearctic Birds. 



[Ueber zweineue palaearktische Formen. Von Harald Baron Loudon. 

 Ornithol. Jahrb. xv. pp. 55, 56.] 



Baron Loudon proposes to separate a form of Chimney- 

 Swallow met with in Turkestan as Hirundo rustica sawitzkii. 

 It is intermediate between //. rustica and H. erythrogastra. 

 The form of Carine noctua of the west side of the Caspian, 

 which has lighter plumage, is to be distinguished as C. noctua 

 caucasica. 



95. Madardsz on a supposed new Genus of Birds. 



[An Extraordinary Discovery in Ornithology. By Dr. Julius von 

 Madarasz. Ann. Mus. Hungar. ii. 1904, pp. 396-398.] 



This paper is concerned with a new Passerine bird found 

 at Lake Jippe, East Africa, by Mr. Coloman Katona, whicli 

 Dr. Madarasz names Charadriola singularis, n. gen. et sp. 

 He considers that it will " entirely modify the hitherto 

 established principal characteristics of the Order Passeri- 

 formes"; for, while resembling Macronyx in general appear- 

 ance, it has the terminal third of the tibia unfeathered, scaled, 

 and reticulated, the tarsus scutellated, and thereby is evidently 

 accommodated to aquatic life. We are, however, informed 

 on good authority that this is the bird already described by 

 Dr. Cabanis in 1879 under the name Tmetothylacus tenellus 

 (J. f. O. 1879, p. 438) and that it is not an aquatic species ! 



96. Nelson on the Species of Myiarchus. 



[A Revision of the North-American mainland Species of Myiarchus. 

 By E. W. Nelson. Proc. Biol. Soc. Washington, xvii. pp. 21-50 (1904).] 



Mr. Nelson has done a good piece of work in revising the 

 arrangement of the North- American species of the very 

 difficult Tyrannine genus Myiarchus from the large material 

 at his command. He recognises 19 species and subspecies. 

 Three new subspecies of M. lawrencii are characterised as 

 M. 1. bant/si (from Panama), M. I. querulus (from the south 



