Zoological Society. 69 



Types, Trochilus furcatus, nigro-fasciatus, Watertonii, &c. 

 Thalurania viridipectus (n. sp.). Thai, corpore superiore ceneo- 

 viridi, hoc colore in viridissimum vergente apud uropygium ; rectri- 

 cibus caudce crissoque necnon caudd metallice cceruleo-nigrescenti- 

 bus ; alis purpurascenti-nigris ; gutture et pectore splendide viri- 

 dibus ; abdomine fulgent e cceruleo ; tar sis plumis albis indutis ; 

 rostro nigro. 

 All the upper surface bronzy green, passing into bright grass-green 

 on the lower part of the back ; upper and under tail-coverts and 

 tail steel bluish black ; wings purplish black ; throat and chest re- 

 splendent grass-green ; abdomen bright blue ; tarsi clothed with white 

 feathers ; bill black. 



Total length 4 J inches ; bill 1 ; wing, 2^ ; tail If. 

 Hub. The Columbian Andes. 



Remark. — Nearly allied to Trochilus nigrofasciatus. 

 Campylopterus obscurus (n. sp.). Camp, vertice, corpore su- 

 periore, rectricibusque caudce quatuor intermediis viridibus ; guld, 

 partibusque inferioribus intense griseis ; lateribus crissoque viridi 

 lavatis ; rectricibus caudce externis utrinque nigris, duabus externis 

 ad apicem griseis. 

 Crown of the head, all the upper surface and the four middle tail- 

 feathers green ; throat and under surface dark grey ; flanks and under 

 tail -coverts washed with green ; the three lateral tail-feathers on each 

 side black, the two outer ones tipped with grey. 

 Total length 5i inches ; bill 1 J ; wing 3 ; tail 2. 

 Hab. River Amazon. 



Remark. — Nearly allied to, but quite distinct from, Campylopterus 

 latipennis. 



Trochilus ( ?) caligatus. Troch. vertice, et corpore supe- 

 riore viridibus, guld et corpore inferiore splendide viridissimis ; 

 alis purpurascenti-nigris ; caudce tectricibus et caudd nitide me- 

 tallico-cceruleis ; crissi plumis eodem coloratis, albo fimbriatis ; 

 femoribus tarsisque plumis niveis indutis. 

 Crown of the head and upper surface green ; throat and all the 

 under surface resplendent grass- green ; wings purplish black ; upper 

 tail-coverts and tail bright steel-blue ; under tail-coverts the same, 

 fringed with white ; thighs and tarsi clothed with snow-white 

 feathers. 



Total length 3| inches ; bill J ; wing 2|- ; tail If. 



Hab. New Granada. 



Remark. — Nearly allied to Trochilus Saucer otii and T. erythronotus. 



Genus Oxypogon. 



Gen. char. — Rostrum capite brevius, debile et rectum. Gence supra 

 subtusque rostrum plumis elongatis ornatae ; illis supra erectis, 

 his subtus pendentibus. Alee paululo longa?. Cauda ampla et 

 occlusa, furcata. Pedes ampli et validi. Tarsi nudi. Hallux cum 

 ungue longior digito, cum ungue intermedio. 

 Gen. char. — Bill shorter than the head, feeble and straight ; face 



both above and below the bill ornamented with lengthened plumes, 

 Ami. k May. N. Hist. Scr. 2. Vol. ii. 5 



