Nov. 1907. BIRDS FROM GUATEMALA DEARBORN. 113 



development of its jaw muscles is remarkable. Iris and bill straw 

 color; feet horn-blue. 



184. Tangavius involucratus (Lesson). 



This species was first noted at El Rancho, but none were obtained 

 there for the reason that they were never encountered outside of the 

 village. One specimen was taken at Lake Atitlan and three others 

 at Tecpam. One of the latter, an immature male, taken April isth, 

 was beginning to moult around the bill; otherwise all were in firm 

 feather. Iris carmine in an adult male, reddish brown in an immature 

 male, and dark brown in a female. 



185. Megaquiscalus major macrourus (Swainson). 



Great-tailed grackles are to be found in every village from the 

 rubber swamps up to at least 7,500 feet, the highest town visited. 

 They stick so closely to the thickly-settled districts that it is only 

 occasionally that the collector is able to obtain specimens. It is 

 claimed by those who are familiar with this bird in Guatemala that 

 the males are polygamous. At El Rancho a colony nests in a large 

 tree in the village square, under which the Indians daily sit with 

 their baskets of fruit to sell. Iris yellow. 



186. Icterus wagleri Sclater. 



This oriole was first seen at Lake Amatitlan, where a pair was 

 secured in some rushes growing at the margin of the lake. Two 

 others were obtained at Lake Atitlan and one at Tecpam. The last 

 mentioned was immature, having only the chin and lores and a few 

 interscapulars black. Its range is apparently in the high lands. 

 Iris dark brown. 



187. Icterus prosthemelas (Strickland). 



A single adult specimen was obtained at Los Amates. Iris dark 

 brown. 



188. Icterus spurius (Linnaus). 



Guatemala is evidently a favorite region with orchard orioles 

 in winter. They were common at El Rancho the first week in Janu- 

 ary, where both adult and immature k birds a were seen gleaning insects 

 in the village trees. Specimens were taken at Los Amates (Jan.), 

 Gualan (Feb.), Lake Amatitlan (Feb.), San Jose (Mar.), Mazate- 

 nango (Mar.), Patulul (Mar. 3ist) ten in all. Two were adult 



