294 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 93 



motionless for considerable periods. They are so small and live in 

 such obscure light that they are seen only by chance. In fact, they 

 are usually found through their low, trilling, toadlike calls. I heard 

 them often when I could not find them. 



Examination of a good series substantiates what I have said else- 

 where 48 with regard to variation in this bird, which, so far as I can 

 see, cannot be divided into geographic races from material now at 

 hand. Hellmayr 4D includes Oncostom-a olivacewn (Lawrence) as a 

 subspecies of cmereigulare, but I believe, with Peters, that it is 

 specifically distinct. "VVe have an excellent series of olivacewn from 

 Panama in which no intergradation is evident, and further have one 

 typical skin of O. cinereigulare taken by J. McLeannan that is 

 marked "Lion Hill, near Aspinwall," Lion Hill being the type 

 locality of olivaceum. The two apparently occur there in the same 

 general region, with no indication of intergradation. We have four 

 excellent olivaceum collected by E. A. Goldman at the type locality. 



ELAINEA FLAVOGASTER SUBPAGANA Sclater and Salvin 



Elainia subpagana Sclater and Salvin, Ibis, 1860, p. 36 (Duefias, Guatemala). 



The only specimen was taken by Carriker on January 18, 1940, near 

 Tres Zapotes. I saw no elaenias during my work in 1939, a matter 

 that aroused my interest since the region seems well adapted for them. 



MYIOPAGIS VIRIDICATA PLACENS (Sclater) 



Elainia placens P. L. Sclater, Proc. Zool. Soc. London, May 1859, p. 46 (Cordoba, 

 Veracruz). 



Carriker secured specimens at Tres Zapotes on January 19 and 

 March 3, 7, 18, and 26, as well as one at El Cone jo on February 10. He 

 found them both in heavy forest and in second growth, usually in the 

 smaller trees or shrubs. They were quiet, but not particularly shy. 

 I did not secure this species in 1939. 



CAMPTOSTOMA IMBERBE Sclater: Beardless Flycatcher 



Camptostoma imberbe P. L. Sclater, Proc. Zool. Soc. London, Nov. 16, 1857, p. 203 

 (San Andres Tuxtla, Veracruz). 



On March 19 I saw one working quickly through the open branches 

 of a small tree at camp but did not collect it. 



PIPROMORPHNA OLEAGINEA ASSIMILIS (Sclater) 



Mionectes assimilis P. L. Sclater, Proc. Zool. Soc. London, May 1859, p. 46 (Cor- 

 doba, Veracruz). 



On the Sierra de Tuxtla Carriker found this flycatcher fairly com- 

 mon in the undergrowth of the heavy forest, where it rarely ranged 



48 Proc D. S. Nat. Mus., vol. 89. 1941, p. 555. 



"Publ. Field Mus. Nat. Hist., zool. ser., vol. 13. pt. 5. 1!)27, p. 310. 



