316 TEOCHILID^. 



of which are attached alternately on either side to a pendent stalk. Each flower 

 resembles an inverted Roman helmet, and is attached as it were by the point of the 

 crest to the stalk. It is a fleshy mass of a deep crimson colour, and the cavity of the 

 calyx extends in a toi tuous manner downwards towards the attachment of the flower 

 to the stalk." 



b". Rostrum elongatum plus minusve arcuatum ; tegulm nasales partim expositce : cauda 

 rotundata aut cwneata, rectridbus mediis elongatis ; remigum rhachides normales. 



a"'. Cauda rotundata. 



THRENETES. 



Threnetes, Gould, Mon. Troch. i. t. 13 (Oct. 1852) ; Salv. Cat. Birds Brit. Mus. xvi. p. 263. 



Threnetes contains five fairly well-defined species which are distributed over the 

 northern portion of South America, from the valley of the Amazons to the north coast. 

 One species is peculiar to our country, ranging from Panama to Guatemala, having a 

 near ally in Western Ecuador. 



In general form Threnetes resembles Glaucis, so much so that it has been merged in 

 that genus by some writers. Besides some peculiarities in the coloration, it shows no 

 serrations like those of Glaucis on the cutting-edges of the bill, which in all respects 

 resembles that of Phaethornis. The tail is much more rounded and formed of wider 

 feathers, the central rectrices not being produced far beyond the rest. 



1. Threnetes ruckeri. 



Trochilus ruckeri, Bourc. P. Z. S. 1847, p. 46 '. 



Glaucis ruckeri, Gould, Mon. Troch. i. t. 11 (Nov. 1851)^; Lawr. Ann. Lye. N. Y. vii. p. 319 'j ix. 



p.l21^ Scl.&Salv.P.Z.S.1864,p.364'; Salv. P. Z. S. 1870, p. 204"; Zeledon, An. Mus. 



Nac. Costa Rica, 1887, p. 121 \ 

 Threnetes ruckeri, Reich. Aufz. d. Col. p. 15 •* ; Salv. Ibis, 1873, p. 428 ; Cat. Birds Brit. Mus. 



xvi. p. 265 "; Salv. & Elliot, Ibis, 1873, p. 278 (partim)". 



Supra nitenti-aureo-viridis, pileo obscuriore, macula postoculari et stria maxillari cei-vinis, loris, tectricibus 

 aimcularibus et g^jla antica nigris, pectore cinnamomeo, corpore subtus reliquo fusco-griseo, tectricibus 

 subcaudalibuB aureo-viridibus fulvo limbatis, rectricibus mediis dorso concoloribus, reliquis ad basin albis, 

 dimidio distali nigro, apicibus albis : maxilla nigra, mandibula camea apice nigra. Long, tota 4-5, alse 2-3, 

 caudee 1-3, rostri arictu 1-35. (Descr. maris ex Panama. Mus. nostr.) 



5 mari similis. 



Hob. Guatemala 9; Costa Rica {Endres^, Zeledon, in TJ. S. Nat. Mus.), Angostura 

 {Carmiol, Zeledon'^), Jimenez ^ {Zeledon, in TJ. S. Nat. Mus.); Paxama, Veraguas 

 ( Warszemez 2), Mina de Chorcha ^ Bibalaz {Arci), Lion Hill {M'Leannan ^ % Line 

 of Railway {Arc^ ^'^), Paraiso {Hughes i*'). 



Bourcier's description of this species was based upon a specimen from an unknown 

 locality. A few years after it was published Warszewiez sent two specimens from 



