308 Mr. 0. Salvin’s Five Months* Birds*-nesting 
Saxicolve and Buticillce mentioned in this paper, an intimate 
relationship can be traced between the whole. In the first in¬ 
stance, take the richly-coloured and highly-marked eggs of 
S. leucura , S. aurita , and S. stapazina, all of which are greenish- 
blue, with decided spots of red-brown; next to them I would 
place those of S. ruhetra , which are similarly marked, but not so 
deeply ; then those of S. rubicola, which also are spotted, but 
more indistinctly; next follow the pale, delicately coloured eggs 
of S. cenanthe , in which a tendency to spotted varieties is not 
unfrequently noticeable; then come the eggs of R . phoenicura , 
among which spotted varieties occur, but not so commonly as in 
the preceding. Those of R. moussieri , with their just traceable 
colouring, follow next in succession ; and lastly, those of R. tithys, 
which, though white, and differing widely from the well-marked 
eggs of S. leucura ) can still be connected with the series through 
the medium of S. cenanthe and R. moussieri. 
The Arabic name for this bird is “ Zinzuck” 
50. Ruticilla phoenicura. (Redstart.) 
I met with this species near El Djem, in the south of the 
Regency of Tunis, at the end of February. 
51. Ruticilla tithys. (Black Redstart.) 
Not an uncommon bird near Tunis and many of the villages 
of the Regency; but it would appear to be more rare in the 
mountainous districts, as I have no note entered of having 
observed it. 
52. Erythacus rubecula. (Robin Red-breast.) 
I shot a Robin near Sousa in the beginning of March. I 
never saw another during my whole stay. 
53. Philomela luscinia. (Nightingale.) 
I observed Nightingales in a wooded ravine near Khifan 
M’sakta, in the early part of April. In the Salt Lake districts it 
does not seem to occur. 
54. Aedon galactotes. (Rufous Sedge Warbler.) 
The head-quarters of this bird seem situated in the Salt Lake 
districts, where we found it abundantly through the months of 
May*and June. It does not appear that marshy ground is an 
