AGTETEIA. 285 



both Agyrtria and Cyanomyia are unrepresented, though both occur on each side of 

 that district. 



Though many of the species of Agyrtria are well defined, others are not so, and the 

 specific limits of the latter are not clearly understood. 



The genus extends over nearly the whole of the tropical portion of South America, 

 its northern limit being defined by that of A. Candida in the middle of the Mexican 

 State of Vera Cruz. Several species occur in Southern Brazil and Bolivia, but none 

 seem to pass beyond the limits of the tropical forests. 



As a genus Agyrtria is very closely allied to Cyanomyia, and it is questionable whether 

 they should be kept apart ; the tail of the latter is perhaps slightly more forked, but 

 the difference is hardly material. In colour there is more diversity, as none of the 

 members of Agyrtria have the crown glittering blue. Cyanomyia, on the whole, seems 

 a natural group of species, and on that account had better be kept apart. 



1. Agyrtria lucise. 



Thaumatias lucia, Lawr. Pr. Ac. Phil. 1867, p. 333'; Elliot, Ibis, 1878, p. 52'. 

 Agyrtria lucice, Elliot, Syn. Troch. p. 208 '; Salv. Cat. Birds Brit. Mus. xvi. p. 188*. 



" Upper plumage of a dull bronzy dark green, the crown duller ; the upper tail-coverts of a lighter bronzy 

 green, somewhat golden ; the tail-feathers are dull bronzy green, all except the two central ones are 

 broadly marked near their ends with dark purplish bronze, the tips being ashy grey ; the throat and 

 breast are glittering bluish green, middle of the abdomen white ; the under tail-coverts are light olive 

 margined with white ; wings brownish purple ; upper mandible black, the under yellow with the end 

 black ; feet black. Length (skin) 3| inches, wing 2J, tail 1|, bill }^." (Lawrence, I. s. c.) 



Sab. HoNDUEAS ^. 



We have never seen a specimen of this species, which Mr. Lawrence compares with 

 A. linncei (=:A. viridissima, nob.), which it resembles in size and colour, difiering in the 

 tail being like that of A. niveipectus. 



The type was the only specimen of the species in the collection in which Mr. Lawrence 

 found it, but there were many examples of A. Candida. 



2. Agyrtria Candida. 



Trochilus candidus, Bourc. & Muls. Ann. Sc. Phys. et Nat. Lyon, ix. p. 326 \ 



Thaumatias candidus, Scl. P. Z. S. 1858, p. 358'; 1859, p. 386'; Scl. & Salv. Ibis, 1859, p. 130* ; 



1860, p. 40'; Salv. Ibis, 1859, p. 467'; 1860, p. 270"; 1872, p. 320'; Cat. Birds Brit. 



Mus. xvi. p. 190°; G. C. Taylor, Ibis, 1860, p. 116"; Gould, Hon. Troch. v. p. 292 (May 



1860) " ; de Oca, La Nat. iii. p. 206 " ; Boucard, Ann. Soc. Linn. Lyon, xx. p. 277 " ; Lawr. 



Bull. U. S. Nat. Mus. no. 4. p. 33"; Sumichrast, La Nat. v. p. 250"; Sanchez, An. 



Mus. Nac. Mex. i. p. 96 ". 



Supra nitenti-oupreo-viridis, pileo et uropygio magis cupreo tinctis : subtus nivea, tectricibus subcaudalibus 

 concoloribus, cervicis lateribus et hyochondriis nitide aureo-viridibus ; cauda olivescenti-viridi, rectricibus 

 lateraUbus fascia subterminali cupreo-puipurea ornatis : rostri maxiUa nigra, mandibula camea apice 

 nigra. Long, tota 3"6, alae 2-0, caudse 1'2, rostri a rictu 0-75. 



