314 Mr. 0. Salviu on the Birds of Nicaragua. 



as regards the species represented by allied forms in the two 

 districts. 



Costa Kica. Chontales. Guatemala. 



P. fuscicauda. Phoenicothraupis fuscicauda. P. rubicoides. 



L. leucothorax. Lanio leucotliorax. L. aurantius. 



E. striaticeps. Embernagra striaticeps. E. chloronota. 



S. pudica. Synallaxis pudica. E. erytlirotborax. 



P. albigiilaris. Porzana albigularis. P. rubra. 



T. brunneicapillus, Tyrannuliis semiflavus. T. semiflavus. 



H. longirostris. Heliomaster pallidiceps. H. pallidiceps. 



One more circumstance remains to be noted. If at present 

 we except Tknjothorus brunneus, which I do not know, and which 

 was described by Mr. Lawrence from an imperfect skin, no species 

 appears to be peculiar to Chontales and Nicaragua. Does not 

 this fact prompt the supposition that the fauna is a derivative one, 

 and that its presence dates from no distant period ? 



TURDUS GRAYI, Bp. 



Chontales (Janson). 



TuRDUS TRISTIS, Sw. 



T. leucauchen, Salv. P. Z. S. 1867, p. 133. 



Chontales {Belt). 



A single specimen of this Thrush has its plumage variegated 

 with white feathers. The normal plumage is very dark, perhaps 

 in consequence, and in this respect is even more deeply coloured 

 than in any of the Vera-Paz specimens we possess, and to which 

 I have already alluded {I. c.) . 



Dendrceca blackburni^ (Gm.). 

 Chontales [Belt). 



Hylophilus decurtatus (Bp.). 

 Chontales {Belt). 



ViREOLANIUS PULCHELLUS, Scl. & Salv. 



Chontales {Belt). 



A single specimen of this species, which has already been 

 traced southwards through Costa Rica and Vcragua to 

 Panama. 



