2. AKKONAUl'ES. 459 



15. Micropus myoptilus. 



Cypselus myoptilu.*, Salvad. Ann. Mus. Cic. Gen. xxvi. p. 228 



The very young specimen from Shoa described by Salvadori, /. c, 

 as Ci/i>seh(s nnjoptilus was kindly sent me by the author lor exami- 

 nation. It is certainly not the young of M. ajms, nor, on account of 

 its dusky-brownish throat, can it be the young of any of the other 

 known species from Shoa. Further investigation must show what 

 tlie adult bird is like. Probably it is an unknown species which is 

 somewhat similar to the Atlantic 31. unicolor. Heuglin (Orn. 

 X.O.-Afr. i.) states that he several times saw a uniform dark- 

 coloured Ci/psehts, much like M. unicolor, which he never procured. 

 Those were probably the old birds of J/, nvjojjtilus. 



I have not been able to examine the following species : — ■ 



16. Micropus niansEe. 

 Cypsehis nianssfi, Reichen. J. f. O. 1887, p. 61. 



Described as being similar to M. (pquatoriaUs, but much smaller. 

 Total length nearly 6 inches, wing 5-9, tail 2" 75. 



Hub. Kagehi, on the Victoria Xyanza {FiscJicr Coll.). 



2. AERONAUTES. 



If Panyptila is admitted as a distinct genus, it becomes necessary 

 to establish a new genus for P. melanoleuca. The structure of the 

 plumage and the shape of the tail are so totally different, that it 

 cannot be associated with Paiiiiptila. Little is known about its 

 niditication, but from the notes published it is evident that it does 

 not build such a peculiar nest as the species of Pani/ptUa do. 



Range. Western United States of North America southwards to 

 Guatemala. 



1. Aeronautes inelauoleucus. 



r- Acanthylis saxatilis*, Woodhoiisc, Kvplor. Ziaini liivei; p. 64 (1853) 



(Arizona) : Cones, Ibis, 1865, p. 356. 

 Cypselus melanoleucus, Baird, Proc. Ac. Phil. 1854, p. 118 (S. 



Francisco Mts.). 

 Panyptila melanoleuca, Baird, B. N. Amer. p. 141, pi. xviii. (1858) ; 



Scl. 8,- Sale. Ibis, 1859, p. 1^5 (Guatemala) : Scl. P. Z. S. 1865, 



p. 607 : id. J. f. O. 1867, p. 128 ; Cooper, Orn. Cal. i. p. 347 (1870) ; 



Baird, Brew. '^- Bidf/w. X. Am. B. ii. p. 424 (l.'^74). 

 Panyptila saxatilis, Coues, Key N. Amer. B. p. 182 (1872); id. 2nd 



* This may be the Ci/ps. melaiiokiiciis of Baird. but the description does not 

 corres])oiid. and Dr. Woodhouse seems not to have procured any specimens. 

 i«ec Baird. Brewer, and Kidgw., >". Amer. B. ii. p. 4l't). note. 



