undescribed Species of Corvus from Tangier. 265 
as a hundred sometimes being seen on the wing at once, are 
quite opposed to those of our Common Haven*. 
Upon shooting one, it was obviously not that species, which, 
by the way, is, as far as I have been able to observe, the only 
Haven inhabiting the European side of the Straits of Gibraltar, 
including the rock ” itself. As above, this bird, which I pro¬ 
pose to call tingitanus , closely resembles C. affinis , except that 
the bristles which cover the nostrils are placed horizontally in 
C. tingitanus, and are upright or vertical in C. affinis. Mr. 
Sharpe kindly compared the five skins of the latter bird which 
are in the British Museum with those of C. tingitanus; and 
we found the same difference in all the specimens of C. affinis 
from various localities, all obtained by separate collectors. 
This difference is also shown in HuppelFs plate of the head of 
C. affinis (vol. i. pi. 10. fig. 2). 
In colour these birds from Tangier vary much in the 
amount of the rusty brown, which, in the adult bird, covers 
the whole of the upper surface of the wings, particularly the 
secondaries ; sometimes the tail is also tinged with brown. 
In all of them there is a trace of brown on the wings. 
This Haven is excessively abundant around Tangier and in 
the low flat country which I have visited in Morocco, but does 
not appear so much to frequent high mountainous districts. 
* [But see Ibis, 1859, p. 312. The Algerian Raven here referred to 
may "be the same as the Tangier bird.— Ed.] 
