404 Zoological Society. 



Sp. 1. Oreotrochilus Estella. 



Orthorhynchus Estella, D'Orb. Voy. Am. Birds, pi. 6. 



fig. 1 ; D'Orb. et La Fres. in Guerin's Mag. de 



Zool. 1838, p. 31. 

 0. Cecilice, Less. Rev. Zool. 1839, p. 43. 



Sp. 2. Oreotrochilus leucopleurus, sp. nov. Oreot. capite, car- 

 pore superiore, alisque, olivaceo-fuscis, griseo tinctis ; tectricibus 

 caudce superioribus sordide (eneo-viridibus ; rectricibus duabus in- 

 tennediis viridibus, ceneo splendentibus ; rectricibus lateralibus 

 sordide albis, apicibus et marginibus exterioribus fuscis ; guld lu- 

 minose viridi, fascia scmilunari holosericd atrd infrh ornatd; 

 medio abdomine lateribusque nigris ; mediis sed lateribus et pec- 

 tore albis. 

 Head, all the upper surface and wings greyish olive-brown, passing 

 into dull coppery green on the upper tail- coverts ; two centre tail- 

 feathers green, with bronze reflections ; lateral tail-feathers dull 

 white, margined externally and tipped, dull brown gradually blend- 

 ing into the white ; throat rich luminous grass-green, bounded below 

 by a crescentic band of deep velvety black ; breast and centre of the 

 flanks pure white ; the remainder of the flanks and centre of the 

 abdomen bluish black; feet dark olive-brown'; bill black. 

 Total length, 4|: inches ; bill, 1 ; wing, 3 J ; tail, 2|. 

 This species is nearly allied to the preceding, but diff^ers from it 

 in being somewhat smaller and in having the centre of the abdomen 

 black instead of chestnut. 



Hab. The Chilian Cordilleras. 



Sp. 3. Oreotrochilus Chimborazo. 



T. Chimborazo, Bourc. in Rev. Zool. Sept. 1846, p. 305. 



Sp. 4. Oreotrochilus Adela. 



Orthorhynchus Adela, D'Orb. Voy. Am. Birds, pi. 61. 

 fig. 2 ; D'Orb. et La Fres. Mag. de Zool. 1839. 



Sp. 5. Oreotrochilus melanogaster, sp. nov. Oreot. omni cor- 

 pore superiore olivaceo-fusco aureo nitente, tectricibus caudce su- 

 perioribus viridi lavatis ; alis griseo-fuscis purpurea splendentibus ; 

 guld fulgente viridi, pectore et abdomine intense cyaneo-atris. 

 All the upper surface olive-brown, with a golden lustre, and 

 washed with green on the upper tail-coverts ; wings greyish brown, 

 with purple reflections ; throat rich lustrous grass- green ; breast and 

 abdomen rich deep bluish black ; flanks rusty brown ; tail green, with 

 bronze reflections ; bill black ; feet olive-black. 



Total length, 5 inches ; bill, 1 ; wing, 3^ ; tail, 2^. 

 Hab. unknown. 



This fine species is in the collection of Mr. John Leadbeater, to 

 whom I am indebted for the loan of it for the purpose of describing. 



Mr. Gould then described a fourth new species of Humming Bird, 

 belonging to the genus Calothorax, as 



Trochilus (Calothorax) Calliope. CaL corpore superiore 

 viridi; alis cauddque griseo-fuscis ; gulce plumis elongatis, atte- 



