366 TROCHILIDA.—CYPSELID&. 
1. Prymnacantha conversi. 
Trochilus conversi, Bourc. & Muls. Ann. Se. Phys. et Nat. Lyon, ix. p. 313". 
Gouldia conversi, Gould, Mon. Troch. i. p. 129 (May 1854) *; Lawr. Ann. Lyc. N. Y. vii. p. 319°; 
ix. p. 123‘; Salv. P. Z. S. 1867, p. 154°; 1870, p. 208°. 
Prymnacantha conversi, Cab. & Heine, Mus. Hein. i. p.65"; Salv. Cat. Birds Brit. Mus. xv. 
p. 430°. 
Supra nitenti-gramineo-viridis, fascia transversa dorsali alba, tectricibus supracaudalibus purpureis: subtus 
gutture toto nitenti-viridis, plaga pectorali cyanea, abdomine viridi plumis ad basin nigris, tectricibus 
subcaudalibus viridibus; cauda chalybea, rhachidibus supra pallide fuscis, subtus albis: rostro nigro. 
Long. tota circa 3°5, alee 1:6, caude rectr. med. 0°35, rectr. lat. 2°4, rostri a rictu 0°55. 
© mari similis: subtus gula nigra utrinque albo marginata, pectore et hypochondriis viridibus plumis ad basin 
nigris, abdomine medio nigro utrinque macula magna albo notato; cauda chalybea, rectricibus lateralibus 
rhachidibus subtus albis, pogonio externo et apicibus quoyue albis. Long. caude rectr. med. 0:5, rectr. 
lat. 0°95. (Descr. maris et femine ex Tucurriqui, Costa Rica. Mus. nostr.) 
Hab. Costa Rica, Tucurriqui (Arcé+*), Angostura (Carmiol®), Naranjo de Cartago 
(Zeledon, in U. S. Nat. Mus.); Panama, Calovevora®, Santa Fé 5, Cordillera del 
Chucu (Arcé), Lion Hill (Af Zeannan *).—CotomsBia! 27; Ecuador ®. 
The original specimen of P. conversi described by Bourcier came from Colombia, and 
was sent thence by M. Convers, who lived for some time at Bogota!. The presence of 
the species within our limits was first noticed by M‘Leannan, who obtained a single 
male specimen in the dense forest near the Line of the Panama Railway, and sent it 
to Mr. Lawrence ?. It was subsequently found in Costa Rica by Arcé, and also at 
several places within the limits of the State of Panama. Its southern range reaches 
Ecuador, where specimens have been obtained by several collectors. Stolzmann’s 
examples from that country were described by Von Berlepsch and Taczanowski as 
Gouldia conversi equatorialis, but they hardly differ from the typical Colombian form. 
The head and throat are perhaps a little brighter, and in this respect the Central- 
American birds agree with those of Western Ecuador. 
Suborder CYPSELI. 
Fam. CYPSELIDZ. 
This suborder is spread over the whole of the temperate and tropical portions of the 
globe, and comprises about 78 species, the American Continents claiming about one- 
third of these. 
Recent authors divide the Cypselide into two sections, based upon the number of 
phalanges in the third and fourth digits of the adult bird. The first of these sections 
forms the subfamily Cypseline, in which the second, third, and fourth digits have each 
three phalanges. In the second section the toes are of normal structure, the third toe 
