TACHTPHONUS. 311 



b. Uropygium flavum. 



3. Tachyphonus xanthopygius. 



Tachyphonus xanthopygius, Scl. P. Z. S. 1854, p. 158, t. 69 ; 1855, p. 83, t. 90'j 1856, p. 116'; 



Cassin, Pr. Ac. Phil. 1860, p. 142 " ; Lawr. Ann. Lye. N. Y. vii. p. 331 = ; Scl. & Salv. P. Z. S. 



1864, p. 351 ^ 1879, p. 503'; Salv. Ibis, 1870, p. 109'. 

 Lanio auritus, DaBus, Bull. Ac. Brux. xxii. pt. 1. p. 153'. 

 Tachyphonus rubrifrons, Lawr. Pr. Ac. Phil. 1865, p. 106". 

 Tachyphonus propinquus, Lawr. Pr. Ac. Phil. 1867, p. 94"; Ann. Lye. N. Y. ix. p. 101". 



Niger, dorso postico et humeris flavissimis, fascicula post-superoiliari coccinea, teotricibus subalaribus albis ; 

 rostro nigro, pedibus obscure plumbeis. Long, tofca 7-0, alse 3-5, caudae 2-7, rostri a rictu 0-8, tarsi 0-8. 

 (Descr. maris ex Remedies, Colombia. Mus. nostr.) 

 ? nigro-cinerea, subtus dilutior, dorso postico flavo, subalaribus albis. (Descr. exempl. ex Lion Hill, Panama. 

 Mus. nostr.) 



Hah. Costa Eica, Angostura {Carmiol m^). p^^jv^ama, Veraguas {Arc6), Lion Hill 

 (M'Leannan^ ^ lo iij^ rjo Truando (Wood ^).— Colombia^ 279. 



A remarkable species whose range is restricted to the northern valleys of Colombia 

 and Central America, as far north as Costa Eica. The northern birds have been 

 separated by Mr. Lawrence, first under the name of T. ruhrifrons and then as T. pro- 

 pinquus. The former name was suggested by a mark on the forehead of the type, which 

 subsequently proved to be a stain, and so a new name was proposed. So far as we can 

 see, T. propinquus rests upon the alleged similarity of the sexes, both male and female 

 having the coloration of the female of T. xanthopygius. We are not in a position to 

 disprove this statement, as our three specimens from the State of Panama are all in 

 female dress ; but we hesitate, without further evidence, to admit that, at least at some 

 season of the year, the male never has a dress like that of the bird of Colombia. The 

 northern birds are so exactly like the female of the true T. xanthopygius that it would 

 be most unlikely that the males did not also at least reseinble each other. 



Mr. Sclater's first description of T. xanthopygius was based upon a female bird from 

 the interior of Colombia ^ ; but the following year he obtained and described the male 

 from the same source ^. 



4. Tachyphonus chrysomelas. (Tab. XXI. fig. 1.) 



Tachyphonus chrysomelas, Scl. & Salv, P. Z. S. 1869, p. 440, t. 32^; Salv. P. Z. S. 1870, p. 188 \ 



Splendide aureus, oculorum ambitu angusto, interscapulio, alis caudaque nigerrimis ; remigum marginibus 



internis et subalaribus necnon rectricum externarum in pogonio interno limbis angustis flavicanti-albis ; 



rostro et pedibus nigris. Long, tota 4-6, alse 2-5, caudse 1-8, rostri a rictu 0-65, tarsi 0-65. 

 5 olivacea, alis caudaque fuscis olivaoeo limbatis ; subtus flavicans, hypocbondriis oUvaceis ; subalaribus et 



remigum marginibus internis albis. (Descr. maris et feminae ex Cordillera del Chucu, Panama. Mus. 



nostr.) 



Hal. Panama, Cordillera del Chucu {ArcS ^ ^). 



The only specimens of this beautiful species of Tachyphonus are those obtained by 

 Arce at the above locality, and which served as the types of the original description ^. 



