308 PROCEEDINGS OF THE NATIONAL MUSEUM vol.93 



Vireo flavoviridis hypoleucus van Rossem and Hacliisuka 59 is a 

 race of flavoviridis marked by duller green above, and slightly paler, 

 less greenish sides, and is in no sense an intergrade toward olivaceus. 

 Nor is there any indication of intergradation in a series of jlavoviridis 

 that I have seen from Tamaulipas. 



Van Rossem 60 has suggested that the type locality of flavoviridis, 

 named by Cassin from specimens from Panama and from San Juan 

 de Nicaragua should be placed in "western Nicaragua." It seems 

 better, however, to accept the more definite designation of Zimmer 61 

 of San Juan de Nicaragua, since that is one of the places from which 

 Cassin had material. Examination of the good series in the National 

 Museum upholds Zimmer's decision that the supposed southern race 

 insulanus named by Bangs is inseparable from jlavoviridis. 



VIREO FLAVIFRONS Vieillot: Yellow-throated Vireo 



Vireo flavifrons Vieillot, Histoire naturelle des oiseaux de l'Amerique septen- 

 trionale, vol. 1, 1807 (1808), p. 85, pi. 54 (eastern United States l. 



Carriker collected a male at Tres Zapotes on February 24, 1940. 



HYLOPHILUS OCHRACEICEPS OCHRACEICEPS Sclater 



HyJophilus ochraceiceps P. L. Sclater, Proc. Zool. Soe. London, 1859 (Feb. 

 1860), p. 375 (Play a Vicente, Oaxaca). 



On April 12, 1939, I found a pair working quickly through the 

 denser undergrowth in heavy forest at Arroyo Corredor. Carriker 

 secured two here on April 1 and 6, 1940. In the Sierra de Tuxtla he 

 found them more common, taking specimens on Cerro de Tuxtla on 

 March 23, April 9, and May 7 and 11 and on Volcan San Martin on 

 April 16 and 23. They ranged to 3,000 feet elevation. 



HYLOPHILUS DECURTATUS DECURTATUS (Bonaparte) 



SuMcola decurtata Bonaparte, Proc. Zool. Soc. London, 1837 (June 14. 1838), 

 p. 118 (Guatemala). 



This was a common species in forested areas. Our series was taken 

 near Tres Zapotes on April 4, 6, 10, and 12, 1939, and February 23 

 and 28, March 26 and April 6, 1940; on Cerro de Tuxtla on March 

 19 and May 9 ; and at Tapacoyan on May 5, 1940. In the mountains 

 Carriker found them to about 1,500 feet elevation. 



I observed them especially in the great forest at Arroyo Corredor 

 and in the swampy woods below the Cerro Chico Zapote. Their calls 

 were low and rather harsh, given with slight emphasis, while the song 



B Vireo olivaceus hypoleucus van Rossem and Hacliisuka, Proc. Biol. Soc. Washington, 

 vol. 50, Sept. 30, 19.'!7, p. 159 (San Francisco Canyon, eastern boundary of Sonora. Mexico, 

 lat. 27° N., 1,200 feet elevation). 



•» Ibid., p. 160. 



61 Amer. Mus. Nov., No. 1127, June 26, 1941, p. 2. 



