i26 FIELD MUSEUM OF NATURAL HISTORY ORNITHOLOGY, VOL. I. 



Description of type: Pileum, lores and auriculars slate-black; throat, 

 sides of neck, back, lesser wing coverts and upper tail coverts slate 

 color, passing into plumbeous on the rump; wings and tail black, 

 edged with slate; breast, abdomen and under tail coverts mars brown. 

 Wing 58 mm.; tail 45 mm.; exposed culmen 10 mm.; tarsus 18 mm. 



Female: Upper parts olive; throat broccoli brown; breast, ab- 

 domen, and under tail coverts vinaceus-cinnamon. Wings and tail 

 dusky, edged with olive; secondaries and greater wing coverts edged 

 with buff. Wing 56 mm.; tail 43 mm.; exposed culmen 10 mm.; 

 tarsus 1 8 mm. 



Two specimens were taken in the type locality by Mr. Barber. 

 It is probable that montana intergrades with baritula, but in the 

 small series at hand two of the former and seven of the latter 

 there is no indication of it. This form has hitherto been included 

 under the name baritula which was originally applied by Wagler to a 

 specimen from Mexico. Salvin and Godman* mention the difference 

 in color of throat on Mexican and Guatemalan specimens; and Ridg- 

 way** calls attention to this and other differences between the single 

 Guatemalan skin in the United States National Museum, and a series 

 from Mexico. Apparently Sclater based his description of baritula 

 in the Catalogue of Birds in the British Museum*** upon a Guatema- 

 lan specimen, for he says "throat plumbeous like the back." 



His final statement that "Guatemalan specimens have less (Italics 

 mine) plumbeous on the throat, thereby approaching D. sittoides" 

 indicates very plainly that he had the two forms confused, for it is 

 the Mexican and not the Guatemalan form that has less plumbeous. 



250. Cyanerpes cyaneus (Linnczus}. 



Two from Patulul and seven from Mazatenango were collected 

 between the i$th and the 3ist of March. This series indicates that 

 the body plumage of immature males changes from the green of the 

 first autumn to the adult blue and black by a rapid and thorough 

 moult in March ; and that the wing and tail feathers are renewed just 

 enough in advance of the contour feathers to be practically grown 

 when the latter begin to shed about the head and interscapulum. 

 Adults apparently moult more gradually and less completely at this 

 time. These honey creepers were as often seen foraging among the 

 branches of roadside trees as in the woods. They were usually in 

 flocks. Iris dark brown ; feet vermilion. 



* Biologia Centrali Americana, Aves. I, p. 242. 



** Bulletin U. S. National Museum, No. 50, part II, p. 381, footnote. 

 *** Cat. Birds Brit. Mus. Vol. XI, p. 4- 



