BIRDS OF SOUTHERN VERACRUZ — WETMORE 277 



Some individuals vary to orange or orange-red on the abdomen. 

 The nasal tufts are orange, about as in grateloupensis. Specimens 

 from Santo Domingo in southeastern Oaxaca are of doubtful status. 

 They resemble this race but from their location are more probably 

 intermediate between polygrammus and veraecrwcis. More material 

 is needed to settle this point. 



Southwestern Chiapas (Finca Juarez) south through central and 

 eastern Guatemala and El Salvador to northern Nicaragua. 



Centurus aurifrons pauper Kidgway : 



Centurus santaeruzi pauper Ridgway, Proc. U. S. Nat. Mus., vol. 10, Aug. 6, 188S, 

 p. 582 (Trujillo, Honduras). 



Similar to santaeruzi, but white dorsal bars averaging slightly nar- 

 rower; size averaging slightly smaller. Wing, male, 117.5-131 

 (123.7) ; female, 115.5-123 (119.5) mm. (measurements from Ridg- 

 way). 



The Caribbean slope of Honduras, ranging possibly north to Belize, 

 British Honduras. 



Centurus aurifrons insulanus Bond : 



Centurus santa-cruzi insulanus Bond, Proc. Acad. Nat. Sci. Philadelphia, vol. 88, 

 Aug. 14, 1936, p. S60 (Utila Island, Honduras). 



Similar to pauper in color of abdomen, but with forehead and super- 

 ciliary region whiter ; upper parts more extensively barred with white ; 

 larger. Wing, male, 130-138; female, 127-128 mm. (measurements 

 from Bond). 



Utila Island, Honduras. 



Centurus hoffmannii of Costa Rica and Nicaragua is generally simi- 

 lar to Centurus aurifrons frontalis but has the tail proportionately 

 shorter, the size decidedly smaller, the under surface darker with the 

 yellow on the abdomen darker and more extensive, the lower rump 

 and upper tail-coverts usually without black markings, and the white 

 on the middle rectrices reduced. The male has the red crown patch 

 averaging larger and usually confluent with the orange of nape. 

 Measurements, taken from Ridgway, are as follows: Male, wing 

 116.5-125 (120), tail 53-61.5 (57); female, wing 112-125.5 (117.8), 

 tail 50-60.5 (54.9) mm. 



While closely related to the aurifrons group, this woodpecker dif- 

 fers sufficiently in the relative length of the tail when compared to the 

 wing to be held as specifically distinct. It is generally similar in ap- 

 pearance to the subspecies aurifrons, polygrammus, and frontalis but 

 is isolated from the nearest of these by the intervention of the very 

 different Centurus aurifrons santaeruzi. In boldness of dorsal pat- 

 tern, it is strongly suggestive of typical aurifrons. 



