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



found in flocks feeding on berries. Six males and two females were 

 collected. The females exhibit a decided difference in color. One 

 has back and breast broccoli brown in decided contrast with an olive- 

 gray head; the other has back smoke-gray, breast drab-gray, and 

 head olive-gray, with only a slight contrast between the interscapu- 

 lum and crown. Iris dark brown. . 



Family Vireoiiidre. 



240. Vireosylva flavoviridis Cassin. 



One specimen was taken at Mazatenango, where this vireo was 

 frequently heard singing in the tops of the enormous trees that 

 form the forest in the low land south of the town. Its song is so simi- 

 lar to that of V . olivaceus that, until one of the birds was collected, it 

 was supposed to belong to that species. Iris red-brown. 



241. Vireosylva gilvus swainsonii (Baird}. 



One was taken and another seen at El Rancho January 6th. No 

 more were seen until March 24th, when they were found at Patulul 

 in abundance, and so continued, at least, until April 2d. Seven were 

 collected at Patulul. At this time, they were passing through the 

 trees in loose flocks and were evidently migrating. The March and 

 April specimens were undergoing a scattered moult, not a general 

 renewal, on head and breast. Iris dark brown. 



242. Lanivireo flavifrons (Vieillot). 



Yellow-throated vireos were found at Gaulan and near El Rancho. 

 Two specimens were collected at the former place early in February. 

 Iris dark brown. 



243. Lanivireo solitarius (Wilson). 



One was taken at Lake Atitlan April icth, and another was taken 

 two days later, on the road to Tecpam, at 6,500 feet. Both were 

 near the completion of the spring moult, covering the head, inter- 

 scapulum and breast, partially at least. Iris dark brown. 



244. Vireo ochraceus Salvin. 



This species was found only in the mangroves. One specimen 

 was collected at Puerto Barrios and five at San Jose. At the latter 

 place they were abundant. All of the San Jose series were olive- 



