138 FIELD MUSEUM OF NATURAL HISTORY -ORNITHOLOGY, VOL. I. 



basal half hair brown and tip white. Wing 119 mm.; tail 95 mm.; 

 exposed culmen 19 mm.; tarsus 28 mm. Iris dark brown. 



Remarks: This is a reddish brown form decidedly different from 

 the slaty form of Vera Paz and western Belize; and readily distin- 

 guishable from the olive-brown Mexican forms, t. tristis and t. assimilis. 

 A single specimen, the only one observed, was collected in thick 

 woods near Patulul. 



The appended map showing the distribution of the subspecies of 

 P. tristis was made according to specimens in this Museum, and Prof. 

 Ridgway's latest work.* Localities are indicated by the initial of 

 the subspecies found there, and type localities by a circle enclosing . 

 the initial. Assimilis, tristis and rubicundus are brown forms, while 

 leucauchen and cnephosa are olive or slaty. It here appears that 

 rubicundus is separated from the other brown forms by a dark olive 

 race, cnephosa. Incidentally, the peculiar relative distribution of 

 leucauchen and cnephosa indicates the need of further study to ascer- 

 tain the exact status of the latter. 



303. Planesticus rufitorques Hartlaub. 



Eleven specimens were collected between 6,500 feet and 9,500 feet 

 altitude, near Tecpam. None were seen below 6,500 feet. The man- 

 ners and song of this species are almost identical with those of P. 

 migratoria in the United States. Specimens were taken in December, 

 January and April. None of them was in moult. There is a decided 

 difference in the color of the abdomen of some of the spring males, 

 which indicates that this area is the last to become clothed in adult 

 plumage. Iris dark brown; bill cadmium-yellow; feet gall-stone 

 yellow. 



304. Catharus frantzii alticola Salvin & Godman. 



Four were collected in the cypress timber near the summit of 

 Sierra Santa Elena near Tecpam. This species was not seen in any 

 other locality. Iris dark brown. 



305. Sialia sialis guatemalae Ridgway. 



The bluebird of Guatemala was first seen in the environs of Guate- 

 mala City. From that altitude. about 5,000 feet up to about 9,000 

 feet, it was not uncommon in cultivated districts. Two specimens 

 were secured, both near Tecpam. Iris dark brown. 



*Bulletin of the U. S. National Museum No. 50, part IV, pp. 108-112. 



