Mr. P. L. Sclater on tJte genus Culicivora of Sicainson. 69 



(T Cceruleo-cinerea, fronte et supefciliis iiiyris : subtus ccerides- 

 centi-alba, rectrlcibus extimis albis. 



*i-^ Man similis, sed linea superciliari et frontali nulla. 



Hab. United States, Texas, and Mexico. 



I cannot discover how the Culicivora mexicana, Bp. Consp. p. 316 

 (oi which I have examined the type in theBerUn Museum), differs 

 fro II this species. It appears to me to be merely a female of the 

 present bird. 



2. PoLioPTiLA DUMicoLA (Vieill.). 



El Contra-maestre azuladillo, Azara, no. 1.58, unde Sylvia dumi- 

 cola, Vieill. C. dumicola, d'Orb. Voy. Ois. p. 331. C. boliviana^ 

 Sclater, in Proc. Zool. Soc. 1852, p. 34. pi. 47. 



S Supra plumbea : fronte et yenis nigris : subtus plumbescenti- 

 alba, ventre et rectricibus utrinque extimis albis. 



$ Fronte et regione auriculari plumbeis concoloribus . 



Hab. Paraguay (Azara) ; Corrientes and Buenos Ay res in the 

 Argentine Republic, and Chiquitos and Moxos in Bolivia (d'Orb.). 



D'Orbigny and Lafresnaye in their Synopsis in the Magasin de 

 Zoologie, Hartlaub in his Index to Azara, and Bonaparte in his Con- 

 spectus, have all more or less confounded the synonyms of this species 

 with those of the next ; indeed the latter author has united all the 

 synonyms under one head, and I was thus led into the error of de- 

 scribing the present bird as new. It is without doubt however the 

 Azuladillo of Azara, and consequently must bear the specific name 

 *dumicola' of Vieillot. Lichtenstein's name ^bivittata'' belongs to the 

 next species, though the above-mentioned authors have quoted it as 

 synonymous with this. 



3. POLIOPTILA LEUCOGASTRA (Max.). 



PI. Enl. 704. fig. 1, unde Motacilla ccerulea, var. /3. Gm. Sylvia 

 leucogastra, Max. Beit. iii. 710. S. bivittata, Licht. in Mus. Berol. 

 C. atricapilla, Sw. Zool. 111. n. s. pi. .57. C leucogastra, Gray's 

 Gen. ? 0. dumicola, Bp. Consp. p. 316. 



(? Cinereay pileo nigra : subtus alba, rectricibus utrinque extimis 

 albis. 



$ Pileo concolore cinereo. 



Hab. Brazil ; Bahia (Pr. Max.) ; Monte Video (Mus. Berol.) ; 

 Cayenne (Buffon) : New Grenada. 



This species is described by Prince C. L. Bonaparte in his Con- 

 spectus as C. dumicola, from which it may be easily distinguished by 

 its black head. 



4. POLIOPTILA BILINEATA (Licht.). 



Sylvia bilineata, Licht. in Mus. Berol. Culicivora bilineata, Bp. 

 Consp. p. 631. 



(? Supra plumbea, pileo nigro : loris superciliis et corpore subtus 

 albis : primariis anguste cinereo, seco7idariis latins albo mar- 

 ginatis : rectricibus extimis apice albis. 



