Bangs — Rare or Not Well Known Costa Rican Birds. 33 



These, as will be seen, by comparison of Ridgway's* measurements of 

 the ty|)e, male, and co-tyi)e, female, from Lion Hill Station, Panama, are 

 very similar, and while my Corrillo specimen difters somewhat, I believe 

 the Costa Rican and Panaman specimens referable to one form. 



Camptostoma imberbe Scl. 



The beardless flycatcher has a more southward range than has been 

 supposed, as proved by a small series taken lately by Underwood in north- 

 ern Costa Rica, as follows: Tenorio, c?, January 23, 1908; 9 , February 7, 

 1908; Coralillo, 9, April 6, 1908; Bolson, (f, December 10, 1907, 9, 

 December 17, 1907. At the latter place, Bolson, he also took Camptos- 

 toma jmsillum flaviventre (Scl. & Salv. ), the ranges of the two species thus 

 meeting in western Costa Rica. 



Pipromorpha assimilis (8cl.). 



In Birds of North and Middle America, Ridgway says that all Costa 

 Rican specimens examined by him were intermediate between P. assimilis 

 assimilis and P. assimilis dyscola. "While this is absolutely true, espe- 

 cially as regards measurements, there is nevertheless such a conspicuous 

 difference in color between series of skins from the north Caribbean fauna 

 on the one hand and the south Pacific fauna on the other, that I think a 

 better plan is to include ])oth forms in the Costa Rican ornis. Skins from 

 such points (in the Caribl^ean fauna) as Carrillo, Tenorio and LaVijagua, 

 thougli smaller, are in color very similar to or often quite tlie same as 

 specimens from Mexico to Honduras, representing true Pipromorpha 

 assimilis (Scl.), and may safely be called by that name. 



Examples from the Boruca region of southwestern Costa Rica are very 

 nearly, both in size and color, typical P. assimilis dyscola (Bangs), and 

 from thence northward at least to Pozo Azul and Buenos Aires all speci- 

 mens can be referred to this form. 



Myiophobus fasciatus furfurosus (Thayer & Bangs). 

 This Panaman species lately added to the Costa Rican ornis by 

 Carriker, who took it at Buenos Aires de Terraba,t appears to be of such 

 rare occurrence in Costa Rica that one young female in nestling plumage 

 secured by Underwood at El General June 13, 1908, is worthy of record. 

 This example differs from adults from Panama only in being a little more 

 reddish-brown both above and l^elow and in lacking the yellow crown- 

 patch. 



• Birds of Nortli and Middle America, Part IV, pp. 392, 393, 1907. 

 t Annals of the Carnegie Museum, Vol. IV, p. 302, 1908. 



