BIRDS OF SOUTHERN VERACRUZ — WETMJORE 269 



Tuxtla on March 11, 1940, and two more of the same sex between 2,500 

 and 3,000 feet on Volcan San Martin on April 16 and 21. They were 

 encountered low down in the undergrowth in heavy forest. 



Brodkorb recently has described a new form 2G from Chiapas, differ- 

 entiating it on the basis of shorter bill, darker pileum, and less bluish 

 wash on sides. His measurements of the culmen from base (without 

 regard to sex) range from 25.5 to 27 mm. It may be noted that in 

 eight available skins from Veracruz and Tabasco the same measure- 

 ment runs 24.5, 26.7, 26.7, 26.9, 27.1, 27.3, 27.3, and 30.2 mm., thus in- 

 cluding the dimensions of the proposed race. In view of the variation 

 exhibited by the species, the color differences proposed should be care- 

 fully checked. The only distinction I can find that holds in our 

 series to distinguish the southern form named ohscurus by Nelson from 

 Panama, whose range extends into northwestern Costa Rica, is that 

 it has the abdomen less definitely whitish. 



Ridgway 27 believed that Valle Real, the type locality of momotula, 

 is in Veracruz. 



Family RAMPHASTIDAE 



AULACORHYNCHUS PRASINUS PRASINUS (Gould) 



Pteroglossus prasinus Gould, fA monograph of the Ramphastidae, 1834 (1833), 

 pi. 29 and text (Valle Real, Mexico). 



Carriker found this species common through the forests across the 

 summit of Volcan San Martin, securing five specimens on April 17 

 and 20, 1940. As usual, the birds were hard to see among the green 

 leaves, though it was not difficult to approach them. He did not find 

 them on Cerro de Tuxtla. 



These five specimens all agree in having the white of the throat 

 definitely yellowish, especially on the lower portion, and a distinct 

 yellow area on the side of the head below the eye, bordering the pos- 

 terior margin of the white of this region, and so forming the border 

 between the white and the green of the posterior area of the side of the 

 head. Six specimens of prasinus from Mirador, and Jalapa, Vera- 

 cruz, all lack this yellow, so that at first glance the San Martin birds 

 appear distinct. However, since I find these same two styles of 

 coloration in series of the races stenorhabdus and virescens, I assume 

 that it is individual variation, due possibly to age. 



24 Hylomanes momotula chiapensis Brodkorb, Occ. Papers Mus. Zool. Univ. Michigan, 

 No. 3G9, Apr. 11, 1938, p. 2 (1,900 meters on Mount Ovando, Chiapas). 

 17 U. S. Nat. Mus. Bull. 50, pt. 6, 1914, p. 486. 



