CYANOMYIA. 289 



C. verticali similis, sed colore eseruleo ; capitis summi plerumque magis violaeeo, cervicis lateribus magis viridibus 

 et Cauda nitide rufescenti-cnprea distinguenda. (Descr. exempl. typ. ex Oaxaca, ilexieo. Mus. Brit.) 



Hub. Mexico, Cuernavaca '', Puebla ^, Atlixco, Oaxaca ^ {Boucard % Putla (Eebouch), 

 Sierra Madre del Sur, Chilpancingo, Venta de Zopilote (Mrs. H. H. Smith), Santa 

 Efigenia aud Tapana {Sumichrast ^ ^). 



M. Boucard discovered this species when collecting in the State of Oaxaca, and his 

 specimens, sent to M. Salle, were described by Gould ^ and subsequently figured in his 

 Monograph 2. 



It is, according to M. Boucard, found in Oaxaca at all seasons of the year. It builds 

 its nest from March to May, and may be seen in the gardens of the town of Oaxaca, 

 taking its food from the flowers of Cacti. 



0. violiceps is closely allied to C. verticalis, but may usually be distinguished by 

 the deeper violet-blue of the crown. More certain characters are the greener tints of 

 the sides of the neck and the colour of the tail. The latter is of a branzy-reddish hue, 

 whereas in C. verticalis it is olive-green. 



/3'. Pileus obscurus. 



3. Cyanomyia viridifrons. 



Cyanomyia viridifrons, Elliot, Ann. & Mag. N. H. 1871, viii. p. 267'; Ibis, 1876, p. 314''; deOca, 

 La Nat. iii. p. 304 ' ; Boucard, Ann. Soc. Linn. Lyon, xx. p. 277 * ; Salv. Cat. Birds Brit. 

 Mus. xvi. p. 196 \ 



Uranomitra viridifrons, Elliot, Syn. Troch. p. 197^,- Sliarpe,in Gould's Mon. Trocli., Suppl. t. 49 

 (April 1885) ■'; Berl. Pr. U. S. Nat. Mus. xi. p. 562". 



Supra nitenti-aureo-viridis, tectricibus supracaudalibus et cauda cupreo tinctis ; capite summo ad frontem 

 satnratiore obscure nigricaati-viridi, cervicis lateribus nitenti-viridi lavatis : subtus (tectricibus subcauda- 

 Ubus inclusis) nivea, lateribus infra alas viridibus : rostro carneo, apice nigro. Loug. tota 3-7, alse 2-1, 

 caudse 1*2, rostri a rictu I'O. (Descr. maris exempl. typ. ex Putla, W. Mexico-. Mus. Brit.) 



Hab. Mexico, Putla (Bebouch^^), Oaxaca (FenocMo^), Tehuantepec (W. £. Bichard- 

 son ^ ; Sumichrast, in U. S. Nat. Mus.), Tonala in Chiapas ( W. B. B.). 



This species was discovered by M. Eugene Eebouch near Putla in the Mexican State 

 of Oaxaca, and described by Mr. Elliot in 1871 ^. 



One of the original specimens passed into Gould's collection, and is now before us. 

 An immature specimen from Oaxaca sent us by Senor Fenochio appears to belong to 

 the same species, and two others — one from Tehuantepec, the other from Tonala in 

 Chiapas — agree very closely with the typical bird. But the specimens from the State 

 of Guerrero obtained by Mrs. Herbert Smith, which we have hitherto considered to 

 belong to this species, differ in having the forehead and crown dark indigo-blue instead 

 of green, and it seems necessary to separate them. 



The southern extension of C. viridifrons has not yet been determined. We trace it 

 BIOL. CENTR.-AMEK., Aves, Vol. II., July 1892. 37 



