LARUS MINUTUS. 213 
feet of the immature bird are orange-yellow^ which would 
lead to the supposition that he observed it more often. 
Mr. Saunders (Ibis^ 187 1^ p. 400) states it to be by no 
means uncommon on the coast of Southern Spain, and suspects 
that it nests at the mouth of the Guadalquivir ; but I can 
only give my own experience of never having had the good 
fortune to obtain it near Gibraltar. 
The distinguishing mark of the species is the long slender 
bill ; legs and feet vermilion. 
Total length about 16 inches, tarsus 1'9. 
309. Larus melanocephalus, Natt. The Mediterranean 
Black-headed Gull. 
This Gull occasionally occurs in the Straits in winter ; but 
I never obtained one with the black head. Mr. Saunders 
states, in ' The Ibis ' for 1871, p. 399, that it breeds at Huelva 
and near Cadiz. 
' In the breeding- plumage the head is black. 
The distinguishing mark is that the outer web of the first 
primary only is black. 
Total length about 15 inches, tarsus V7. 
310. Larus ridibundus, Linn. The Black-headed Gull. 
According to Favier this Gull is the most common species 
around Tangier, arriving chiefly during November, and de- 
parting north in March. 
The distinguishing mark of the species is that the outer 
web of the first quill-feather, the ends of all, and the inner 
webs of the other primaries are edged with black. 
Total length about 15 to 16 inches, tarsus 1*6. 
311. Larus minutus. Pall. The Little Gull. 
Favier only mentions having once obtained this diminutive 
Gull near Tangier, in February 1854. I have seen it occa- 
sionally in winter; but it is not common in the Straits, though 
further eastward (at Malaga) Mr. Saunders states that it is 
not uncommon in winter and spring. 
The small size of this species will serve to distinguish it, 
the total length being about 10" 5 inches, tarsus 0"95. 
