1870.] MR. R. B. SHARPE ON ETHIOPIAN HIRUNDINIDE. 307 
occurrence of the bird on the St. Gothard, it is just possible that a 
specimen may have been taken there, and that it may occur as an 
accidental visitor, since Mr. Howard Saunders (1. c.) has found an 
undoubted specimen of H. riocowri in the Museum at Catania. That 
the species is really an occasional migrant to the west, appears to me 
most probable, for the same reason that Chettusia leucura, another 
Egyptian bird, occurs in Malta; but I cannot but believe that the 
more common Hirundo rustica in the spring plumage, when the 
underparts are a very bright rust-colour, has often been mistaken 
for the true H. riocouri. If this really prove to be the case, the 
statement made by Professor Blasius, and reproduced by Dr. Bree, 
will require some modification. Its occurrence in Greece, where it is 
said to breed, appears to rest on pretty good authority ; but I should 
like to see specimens from that country. 
The types of Temminck’s H. boissoneauti are stated by him to have 
come from Greece and Tripoli; and he gives the habitat of the bird 
as Andalucia and Greece, and probably the northern portion of 
Africa. I omitted to examine Temminck’s types when at Leyden, but 
would suggest that, as in the case of the Tschagra Shrike (Telephonus 
cucullatus) the existence of the present species in Spain is imaginary. 
In Mr. George Robert Gray’s ‘Genera,’ and in Mr. Bree’s ‘ Birds 
of Europe,’ this bird is said to be the Hirundo savignyi of Leach. 
I cannot find the description. In Tuckey’s Expedition to the Congo 
(p. 407), the present species is stated to have been procured, and is 
included on this authority in Dr. Hartlaub’s work on the ornitho- 
logy of Western Africa. I much question the correct identification 
of the specimens, and have not included Congo in my list of localities. 
Again, Mr. Cassin has stated that the Philadelphia Museum has a 
specimen from Monrovia, and also that Du Chaillu collected it on 
the River Camma. In both these instances I believe the full spring 
plumage of H. rustica to have been mistaken for H. cahirica. 
In conclusion, I beg leave to assert that I by no means wish to 
deny the occurrence of H. cahirica in any of the localities mentioned 
by various authors, but that at present the evidence does not satisfy 
me. I shall, however, be the first to retract my views on receiving 
satisfactory information for the extension of the geographical distri- 
bution of this species of Swallow. 
The bird from Eastern Siberia mentioned by Pallas (Zoogr. Ross.- 
As. i. p. 530), and suggested by Prof. Schlegel as being probably the 
present species (Rev. Crit. p. xviii.), is the Hirundo horreorum of 
North America, of which I have specimens in my collection from 
Lake Baikal. 
3. HiruNDO ANGOLENSIS. 
Hirundo angolensis, Bocage, Jorn. Acad. Lisb. 1868, p. 47; 
Sharpe, P. Z.S. 1869, p. 567, pl. xliii.; Bocage, Jorn. Acad. Lisb. 
1869, p. 339. 
Forehead, throat, and upper part of the breast deep brick-red ; 
_ entire upper surface rich steel-blue, having a greenish lustre in some 
lights ; tail gradually forked, the two middle feathers steel-blue, the 
