306 Zoological Society : — 



Remark. — This very distinct species is allied both to Chlorostilhon 

 Portmanni and C. Alicia ; but it differs from the former in the greater 

 length of its bill, and from the latter in the greater length of its tail- 

 feathers. In the present species, the outer tail-feather on each side 

 is prolonged nearly an eighth of an inch beyond the next, which 

 again is a little prolonged beyond the centre feathers. When the 

 tail is closed, the two outer feathers join at the tip, and form a sharp 

 point ; in the two species with which I have compared it, the tail is 

 more truncate. 



Chlorostilbon Osberti, Gould. 



Crown of the head glittering golden-green ; throat and all the 

 under surface glittering grass-green ; wing purplish-black ; tail black, 

 the six centre feathers terminated with a mark of brown, which is 

 more conspicuous in some specimens than in others ; in some also the 

 two central feathers are tipped with green ; bill coral-red at the base, 

 black at the tip. 



Total length 2$ inches ; bill -| ; wing If ; tail 1£. 



Hab. Guatemala. 



Remark. — This species, which I have named after Mr. Osbert 

 Salvin, and which is an inhabitant of the neighbourhood of Duenas 

 and some other parts of Guatemala, has been a great puzzle to me, as 

 it must be to every Trochilidist who studies the little green Hum- 

 ming- Birds to which the generic name of Chlorostilbon has been ap- 

 plied. It is, in fact, a diminutive C. Caniveti, but too diminutive to 

 be regarded in any other light than in that of a species. 



In naming this bird after Mr. Osbert Salvin, I feel that a finer 

 species might have been more appropriately dedicated to him ; for 

 there is no person of his youthful age who has exerted himself so 

 praiseworthily or so successfully in collecting facts and specimens of 

 ornithology. Mr. Salvin has already traversed a great part of the 

 country of Central America, and has also paid a hurried visit to 

 North Africa, and collected in both countries an immense mass of 

 materials in every department of zoology, which he has liberally 

 placed at the disposal of those who have devoted themselves to the 

 several departments to which they pertain. 



Calothorax decoratus, Gould. 



Male. — Crown of the head, all the upper surface and flanks deep 

 grass-green ; throat and sides of the neck very lovely shining lilac ; 

 chest grey ; wings and tail purplish-brown ; bill black. 



Total length 3 inches ; bill j ; wing If ; tail g. 



Hab. Supposed to be Antioqua in Columbia. 



Remark. — This species might easily be mistaken for Calothorax 

 Heliodori; but although closely allied to that species, it differs 

 from it in several particulars — in being much larger, in having the 

 frill in front of the throat not so prolonged at the sides (in which 

 respect it more nearly resembles C. Mulsanti), the two centre tail- 

 feathers finer or more spiny, and the bill much longer. These com- 

 parisons have been made with fine specimens in my collection of all 

 three species. 



