of the dusky striatums on the throat and hreast. Although known for a long time to 

 occur in Western Africa, it was generally confounded -with H. melanocrissa, and it was 

 only in 1870 that Drs. Finsch and Hartlauh discriminated it clearly and bestowed on it 

 a separate specific name. 



The typical specimens came from Casamence, and we have ourselves seen several 

 examples from the same locality. It is not common in any part of Senegambia, 

 according to Dr. de Rochebrune, who states that lie met with it at the following locali- 

 ties — Gambia, Casamence, Melacoree, Zekinkior, Sedhiou, and Bathurst. 



The late Mr. W. A. Forbes met with the species at Shonga, on the river Niger, and 

 the pair of birds obtained by him are now in the British Museum, with the collection 

 bequeathed to the nation by that admirable and much-regretted naturalist. 



In North-eastern Africa Von Heuglin observed this Swallow in the marshy districts of 

 the Gazelle Paver in the month of February, where it was living in small communities. 

 According to the same observer, it is probably a migratory bird in those districts. He 

 describes it as having a swift and elegant flight, in the course of which it makes a 

 hovering movement without any apparent vibration of the wings. They may often be 

 observed flying off the bare branches at the tops of high trees, generally three or more 

 together. The note is a plaintive whistle, " ter-ter." 



The figure in the Plate is drawn from a specimen in Capt. Shelley's collection. 

 The descriptions are taken from a pair of birds collected by the late Mr. W. A. Forbes 

 on the river Niger. 



