394 Bulletin American Museum of Natural History. [Vol. XXXVI, 



as P. harterti. It should be remembered, however, that in this fauna, 

 though at more widely separated stations, we already have three species of 

 Pittasoma, namely, P. rufopileatum of northwestern Ecuador, P. rosenhergi 

 of the headwaters of the San Juan, and P. michleri of the lower Atrato and 

 eastern Panama. It is evident, therefore, that this genus, which is restricted 

 to the Colombian-Pacific Fauna, has a marked tendency to break up into 

 distinct species in an area where many other species do not show even sub- 

 specific variation. Possibly therefore, it is not much more remarkable to 

 find different though representative species of Pittasoma in northwestern 

 Ecuador and southwestern Colombia, than it is to find them in central 

 western Colombia and northwestern Colombia. 



Of P. rufopileatum I have seen no specimens, but Hartert's excellent 

 plate ' of this species forms an admirable substitute for skins. It should be- 

 added, however, that Hellmayr (P. Z. S., 1911, p. 1176) has shown that the 

 bird figured by Hartert as young, is an adult female. Hellmayr remarks: 

 "This is quite evident from the large series, partly in the Tring Museum, 

 partly in the possession of Mr. Rosenberg, which I have examined." 



I take pleasure in naming this bird for Dr. Ernest Hartert, in recognition 

 of his important contributions to ornithology, and particularly to our knowl- 

 edge of the ornis of the Pacific coast region. 



(2175) Grallaria squamigera Prev. 

 Orallaria squamigera Phev., Voy. Venus, Zool., 1849, p. 198, pi. 3, (Bogotd). 



Four specimens from the Temperate Zone of the Central Andes are 

 much deeper plumbeous above than an old ' Bogota ' skin. The difference, 

 if actual, would constitute a well-marked race of the Central Andean bird, 

 but it is doubtless due to fading in the Bogota bird. In the Central An- 

 dean specimens the throat averages whiter, but this is probably individual. 



Laguneta, 2; Santa Isabel, 2. 



(2178a) Grallaria guatimalensis chocoensis subsp. nov. 



Char, subsp. — Resembling Grallaria guatimMensis princeps (Sel. & Salv.) in 

 general color but crown more olive, back richer, wings more olive less rufous, lores 

 mixed rusty and blackish rather than whitish; size very much smaller. Wing, 89; 

 tail, 28; tarsus, 42; culmen, 22 mm. 



Type.— No. 123, 351, Am. Mus. Nat. Hist, cf, Baudo (alt. 3000 ft.), Choc6, 

 Colombia; July 13, 1912; Mrs. E. L. Kerr. 



1 Nov. Zool., IX, 1902, pi. viii. 



