120 A Catalogue of tl< > Birds found in Costa Rica. 



since Mr. Gould has indicated an extended locality and speaks 

 of variations of this kind, and having but few examples (two) 

 for comparison, I feel bound to leave the separation of the bird 

 from Costa Rica for future comparison." 



There are before me nine examples from Costa Rica of both 

 sexes ; at first sight this species might be taken for P. thalassina, 

 but in fine specimens the colors are darker, with the tail of a 

 deeper blue ; it is, however, quitedistinct ; as pointed out by 

 Mr. Cabanis the blue coloring under the eyes and on the ears 

 is more extended than in P. cyanotis, but the tail bands vary in 

 distinctness ; it is of a deeper green than P. cyanotis, and lias the 

 blue on the cheeks to extend as far as the forward part of the 

 eye, while in cyanotis this color extends only as far as on 

 a line with the middle of the eye; in thalassina, the blue «olor 

 is continuous as far as the bill and covers the chin also, there is 

 likewise a patch of blue on the breast of thalassina, not found in 

 cyanotis ; in fine plumaged males of the bird from Costa Rica, 

 there is just a perceptible tinge of blue on the breast. The size 

 is about the same as that of thalassina, and apparently larger 

 than cyanotis. 



Should these differences be considered sufficient to constitute 

 it a new species, I propose for it the name of Petasophora 

 cabanisii. 



353. Heliomaster constanti (Ddati.). 



(.1. Carmfol) ; (Dr. Frantziu6). 



854. //< I'm, a, i si, r Imnjirnstris ( Yi, ill.). 



" Enrique Arce." Collection of Mr. < >. Salvin. 



355. 11,1'niin tsi, r pallidiceps, Gould, 



"Gulf of fficoya." Collection of Mr. 0. Salvin. 



850. Heliomaster sclateri, Cahanis. 



San .l"-«' (Dr. Frantzins); Angostura (J. Carmiol). 



There are three specimens from Costa Rica, but one of which 



is adult and has the <t<»wii of a deeper ;md more decided blue 



than any specimen I have Been of //. Innyirostvix, this being 



