290 Bangs, Birds from Western Costa Rica. [juiv 



Remarks. There is no doubt that the small species of Micrastur with 

 barred underparts very much need careful reviewing; the reviews of 

 Ridgway and of Gurney being based on much too scanty material. Still, 

 after going over the whole matter very carefully, I cannot find that the 

 bird of Costa Rica and Panama has ever been named, and as it certainly 

 is different from M. guerilla of Mexico and northern Central America on 

 the one hand and from M. zonothorax (Cab.) of Colombia and Venezuela 

 on the other, I venture to give it a name. Formerly 1 I had referred a 

 bird from Divala, Chiriqui to M. zonothorax, but this specimen belongs 

 to the new form here described from Costa Rica. 



Geranospizias niger (Du Bus). One adult male, Pozo del Rio Grande, 

 April 6. 



Accipiter bicolor schistochlamys Hellmayr. Two males, one adult, 

 one young, Boruca and Pozo del Rio Grande, May and August. 



Asturina nitida (Lath.). One fine adult male, Pozo del Rio Grande, 

 April 3. 



This hawk has not previously been taken, I believe, so far north as 

 Costa Rica. 



Rupornis ruficauda (Scl. & Salv.). Three adults, both sexes, Boruca 

 and Pozo del Rio Grande, April and May. 



Elanoides furcatus (Linn.). Two adults, male and female, Boruca, 

 April 25. 



Leptodon cayennensis (Gmel.). One adult male, Pozo del Rio Grande, 

 Aug. 4. 



Cerchneis sparveria (Linn.). One female, Boruca, May 6. 



I cannot attempt to say to what subspecies this specimen is referable, 

 as it is in exceedingly abraded plumage. 



Pandion haliaetus carolinensis (Gmel.). One male, Barranca Puntare- 

 nas, Aug. 12. 



Tinamid.e. 



Tinamus castaneiceps Salvadori. Seven specimens, adults of both 

 sexes and one youngish male, April and August. The young example, 

 which is moulting, has the back and wings irregularly marked with small 

 yellowish spots. 



Crypturus soui modestus (Cab.). Twelve specimens, adults of both 

 sexes and two chicks, one taken April 19, the other May 24. The larger 

 of these, though no bigger than a sparrow, has the wing feathers all well 

 grown and undoubtedly flew well. Boruca and Pozo del Rio Grande, 

 April, May and August. 



CrACID.E. 



Crax panamensis Ogilvie Grant. Two adult males, Pozo del Rio Grande, 

 April 8. 



1 Auk, Vol. XVIII, October, 1901, p. 358. 



