brown bases to the feathers ; throat, chest, and sides of body brown. Total length 7 inches, cul- 

 men 0-45, wing 5-45, tail 2"9, tarsus 0'6. 



Young. Much browner than the adults, with only a slight blue gloss ; quills fringed with whity brown ; 

 bill yellow at gape. 



The following measurements are taken from the series of specimens in the British Museum : — 



Total length. Wing. Tail. Tarsus, 



in. in. in. in. 



a. c? ad. Spanishtown [W. T. March) 69 5-7 2*8 05 



b. S ad. Jamaica » 7-2 5-6 2-8 055 



c. S ad. „ {Mus. Salvin % Godman) 7-0 5'7 2"8 0"55 



d. Juv. „ „ 6-8 5-45 2"75 0-55 



e. ? ad. „ {TV. T. March) 7-3 5-6 2-8 0-5 



/. S ad. Porto Rico {H. Bryant) 6'8 5"6 2'8 0-55 



g. $ ad. „ „ 6-8 5-8 2-9 055 



h. $ ad. „ „ 6-9 5-55 2-8 0'5 



i. $ ad. „ „ 7-3 5-65 2-8 0-55 



ft. $ ad. „ „ 6-8 55 2-75 0-55 



I $ ad. „ {Dr. Gundlach) 7-0 5-5 2-55 0"55 



m. Juv. „ {Swift) 7-3 5-4 2'6 0"55 



n. Juv. „ „ 7-3 5-25 2-7 (V55 



o. $ ad. „ (G. Latimer) 7-0 5'5 2-55 0"55 



p. J 1 juv. S. Domingo (C. G. MacGregor) 6 - 5 5 - 55 2 - 6 - 55 



q. $ ad. Dominica {F. A. Oder) 7S 5'7 2'8 0'5 



r. $ ad. S. Lucia {Semper) 6'7 5 - 15 2'45 0'5 



The female of P. dominicensis and the young birds are very difficult to distinguish from Progne 

 chalybea, and, indeed, the young of the two species are quite inseparable. The old female of 

 P. dominicensis appears to have the throat more ashy brown than the same sex of P. chalybea, which 

 is decidedly duller brown. There are generally also some small dusky shaft-streaks on the throat 

 and breast in P. chalybea, of which we can find uo trace in P. dominicensis. 



Hab. S. Domingo, Jamaica, and the Lesser Antilles. 



This beautiful species is confined to the "West-Indian Islands, and is a well-known 

 inhabitant of Jamaica. It also occurs in San Domingo. Mr. Cory found it not un- 

 common near Samana, and states that although none were taken elsewhere, it is probably 

 abundant in some localities. We have seen several specimens from Porto Bico, where 

 it was found to be very plentiful by Mr. E. C. Taylor in 1863. 



In Dominica, Mr. F. Ober writes, " the first seen was shot at Mountain Lake, 

 2300 feet above the sea-level, on the 23rd of March ; later in the season I found a few 

 on the Atlantic side, in June, breeding in the cliffs at Batalie, on the Caribbean shore." 

 The same traveller also met with the species in the islands of Martinique and Grenada. 

 One specimen only was observed on the latter island, and it is probably rarer on the 

 southern islands of the Lesser Antilles. The late Sir William Jardine (Ann. & Mag. 



