^'OV^TATES ZOOLOGICAE XXIV. 1917. 411 



Blacicus brachytarsus guianarum subsp. nov. 



Type: S near Paramaribo, Surinam, 6. ix. 1900. B. Chunkoo coO. (In 

 the Tring Museum.) 



In Nov. ZooL. 1902, p. 50, Berlepsch and Hartert discussed a? from Alta- 

 gracia on the Orinoco River. This specimen is indeed very small and rather 

 olive above, but, of course, we cannot say anything more about it until a series 

 from Altagracia is available. 



Specimens in the Tring Museum. 



Guatemala, Costa Rica ..... 6 



Venezuela, Trinidad ...... 23 



Cayenne, Surinam ...... 9 



Orinoco ........ 1 ' 



3. Elaenia gaimardii trinitatis subsp. nov. 



The forms of Elaenia gcmnardii have been reviewed by tlie late Count 

 Berlepsch — for many years our teacher and mentor in South American ornith- 

 ology — in the Proceedings of the Fourth I ntenmtional Orn. Congress, pp. 419- 

 422. He distinguished three subspecies : Elaenia gaimardii gaimardii, E. g. 

 guianensis, and E. g. bogotensis. The first he accepted as ranging from Bolivia 

 and N.E. Peru to the Orinoco, Venezuela (Puerto Cabello), Trinidad, Brazil as 

 far as Mattogrosso and the Rio Negro ; E. g. guianensis as British Guiana, 

 Cayenne, and N. Brazil (Para) ; E. g. bogotensis as Colombia (Bogota collections 

 and Sta. Marta). This distribution is somewhat peculiar, and the series in the 

 Tring Bluseum does not bear it out. 



Our birds from the Orinoco basin diifer strikingly from two skins from 

 Para and two from Goyaz, which seem to agree perfectly with each other. The 

 Orinoco birds do not seem to be distinguishable from guianensis unless the 

 underside is still of a richer yellow. On the other hand, five from Cumana 

 (North Venezuela) seem to be exactly like bogotensis from Bogota collections, 

 which is altogether paler than guianensis. The Trinidad birds (eleven skins 

 collected by Andre) are nearest to bogotensis, but differ in having the uppersidc 

 duller, more olivaceous, not so greenish ; the crown is white, as a rule without 

 the slightest tinge of yellow ; the sides of the crowii is deeper blackish ; the 

 ashy-white colour of the throat seems to extend farther back to the chest, and 

 the abdomen is paler sulphur-yellow. The wings vary much in length ; barring 

 some apparently wrongly sexed specimens, the wings seem to measure 58-60 mm. 

 in females, 62-65 in males. 



Type of E. g. trinitatis: 3 Caparo, Trinidad, 20. iv. 1902, E. Andre coll. 

 (Tring Museum.) 



4. Hirundinea bellicosa pallidior subsp. nov. 



Comparing eight skins of Hirundinea bellicosa from the provinces of Tucu- 

 man, Salta, and Catamarca, all three in the north-western part of Argentina, 

 with twenty-one from south-eastern Brazil and one from Paraguay (Colonia 

 Risso near the Rio Apa), it is obvious that the former are paler, especially on 

 the underside, the upper wing-coverts have more rufous and the primaries are 



