270 TANAGRIDZA. 
4. Calliste gyroloides. 
Aglaia gyroloides, Lafr. Rev. Zool. 1847, p. 277°. 
Calliste gyroloides, Scl. P. Z. S. 1856, pp. 1427, 255°; 1857, p. 264°; 1859, p. 139°; Mon. Call. 
p. 57, t. 26°; Lawr. Ann. Lyc. N. Y. vii. p. 382"; ix. p. 98°; Scl. & Salv. P. Z. 8. 1864, 
p. 850°; 1879, p. 499°; Salv. P. Z. S. 1867, p. 188"; 1870, p. 186%; v. Frantz. J. f. 
Orn. 1869, p. 298°; Wyatt, Ibis, 1871, p. 325 ™. 
Aglaia gyrola, @Orb. & Lafr. Syn. Av. i. p. 32° (nec Linn.). 
Tanagra gyrola, d’Orb. Voy. Am. Mér. vi. Ois. p. 272". 
Aglaia peruviana, Swains. An. in Menag. p. 356. 
Calliste cyanoventris, Gray, Gen. Birds, ii. p. 366”. 
Supra clare viridis, capite et mento castaneis, torque nuchali et humeris aurescentibus ; dorso postico et abdo- 
mine toto ceruleis ; crisso viride; tibiis pallide rufis ; rostro et pedibus obscure corylinis. Long. tota 5:5, 
alee 3-0, caude 2:0, rostri a rictu 0°6, tarsi 0°7. 
Q mari similis, sed coloribus omnibus paulo obscurioribus. (Descr. maris et feminee ex Lion Hill, Panama. 
Mus. nostr.) 
Ay. juv. fere omnino viridis subtus pallidior. (Descr. av. hornot. ex Calovevora, Panama. Mus. nostr.) 
Hab. Costa Rica, Savanilla de Pirris (v. Frantzius 1°), Barranca, Guaitil, Dota (v. Frant- 
zius 1°, Carmiol’), Turrialba (Arcé); Panama, Chiriqui (Bridges*), Volcan de 
Chiriqui !*, Bugaba !°, Boquete de Chitra 12, Vivala, Cordillera del Chucu !*, Calo- 
vevora !*, Santa Fé™ (Arcé), line of railway (M/‘Leannan’®).—SovutH AMERICA, 
Colombia 1° 18 to Ecuador °®, Peru ? 17 and Bolivia 5, Upper Amazons *. 
Some years had expired after specimens of this bird had been obtained before it 
remained in quiet possession of its present title. At first it was unrecognized from 
Calliste gyrola of Linneus, to which it bears a general resemblance. Swainson then 
perceiving its differences gave it the name of Aglaia peruviana "’, unfortunately choosing 
a title that had already been adopted fora bird of the same genus. The same misfortune 
attended the name C. cyanoventris chosen for it by G. R. Gray 18. Finally, in 1847, 
Lafresnaye called it Aglaia gyroloides', under which specific name it has since passed. 
C. gyroloides belongs to a group of four well-marked green-backed Calliste. From 
the Guiana C. gyrola it differs in having the rump and the whole of the underparts 
blue. The same differences separate it from the Venezuelan C. desmaresti, in which 
the underparts are wholly green. The green chest and flanks and the chestnut of the 
primaries of C. laviniew of Central America render it again very easily distinguishable 
from C. gyroloides. 
In its range C. gyroloides covers a much wider area than any of the other allied 
species, being found uninterruptedly from Bolivia to Costa Rica. It diverges but little 
from the slopes of the Andes; and, though found as far east as the Rio Javarri in the 
Upper Amazons “, it would appear to be by no means common anywhere in the valley. 
In all collections made in Ecuador and Colombia C. gyroloides is a conspicuous 
species, and it would appear to be a very common bird in those countries. It is 
equally so in the State of Panama, whence numbers of specimens have been sent us. 
