TACHYPHONUS. 311 
b. Uropygium flavum. 
3. Tachyphonus xanthopygius. 
Tachyphonus xanthopygius, Scl. P. Z. S. 1854, p. 158, t. 69 ; 1855, p. 83, t. 90°; 1856, p. 116°; 
Cassin, Pr. Ac. Phil. 1860, p. 142*; Lawr. Ann. Lyc. N. Y. vii. p. 831°; Scl. & Salv. P. Z. 8. 
1864, p. 851°; 1879, p. 503"; Salv. Ibis, 1870, p. 109°. 
Lanio auritus, DuBus, 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 fiavissimis, fascicula post-superciliari coccinea, tectricibus subalaribus albis ; 
rostro nigro, pedibus obscure plumbeis. Long. tota 7:0, ale 3°5, caudee 2°7, rostri a rictu 0°8, tarsi 0°8. 
(Descr. maris ex Remedios, Colombia. Mus. nostr.) 
Q nigro-cinerea, subtus dilutior, dorso postico flavo, subalaribus albis. (Descr. exempl. ex Lion Hill, Panama. 
Mus. nostr.) 
Hab. Costa Rica, Angostura (Carmiol 12); Panama, Veraguas (Arcé), Lion Hill 
(M‘Leannan® % 10 11), Rio Truando (Wood *).—Cotomsia ! 2 79, 
A remarkable species whose range is restricted to the northern valleys of Colombia 
and Central America, as far north as Costa Rica. The northern birds have been 
separated by Mr. Lawrence, first under the name of 7. rubrifrons and then as 7. pro- 
pinquus. ‘The former name was suggested bya 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, 7. propinquus rests upon the alleged similarity of the sexes, both male and female 
having the coloration of the female of 7. 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 7. xanthopygius that it would 
be most unlikely that the males did not also at least resemble each other. 
Mr. Sclater’s first description of 7. 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. 8321; Salv. P. Z. 8. 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, ale 2:5, caude 1:8, rostri a rictu 0°65, tarsi 0°65. 
© olivacea, alis caudaque fuscis olivaceo limbatis; subtus flavicans, hypochondriis olivaceis; subalaribus et 
remigum marginibus internis albis. (Descr. maris et femine ex Cordillera del Chucu, Panama. Mus. 
nostr.) 
Hab. Panama, Cordillera del Chucu (Arcé ! *). 
The only specimens of this beautiful species of Tachyphonus are those obtained by 
Arcé at the above locality, and which served as the types of the original description }. 
