Vol. XVI~] 
1899 J 
Chapman, The Seaside Sparro-ws. 
9 
instead of mummy brown, the nape is more olive, and, with the 
exception of No. 159388, the breast and flanks are much less, 
strongly streaked and less heavily washed with buffy ochraceous, 
the coloration of these parts agreeing with that of peninsula. 
Apparently these two forms of Seaside Sparrow, represented by 
my series of ten and six birds respectively, are found breeding 
in the same area, a fact which is evidently proven by two birds 
in first or nestling plumage. One of these (U. S. Nat. Mus. 
No. 159389, <J) was taken by Mr. A. T. Wayne at Mount Pleas- 
ant, So. Car., Aug. 10, 1893, and is obviously the offspring of a 
very dark Seaside Sparrow, being much blacker than any of a 
dozen New York examples in similar plumage, and in fact agree- 
ing very well with six young birds collected by Dr. A. K. Fisher 
on Grand Isle, La., June 6-9, 1896. This is evidently the 
progeny of the dark bird just described. 
The other young bird (No. 12437, Coll. Wm. Brewster) was 
collected by Mr. Walter Hoxie, near Frogmore, So. Car., Aug. 
10, 1886. It is much lighter than the Mount Pleasant specimen, 
with which it agrees in age, and approaches young maritimus 
from New York, differing from it to just about the same extent 
and in much the same manner as do the peninsulce-maritimus 
adults of this region from adult true maritimus. This bird is 
apparently the offspring of peninsulce-maritimus parents. Hence 
the breeding of these birds and of the dark type in the same 
region is shown both by the presence of adults and their 
respective offspring. What their interrelationships may be, and 
whether they occupy different breeding areas, are questions 
which can be settled only by observation in the field. Speci- 
mens before me apparently show their intergradation but my 
material does not admit of satisfactory conclusions. 
However, admitting that we have two forms, we are now con- 
fronted by the question of nomenclature. What names shall we 
apply to them ? The peninsulce-maritimus specimens, as I have 
previously said, should, in my opinion, be identified with penin- 
sula rather than with maritimus , but what shall we call the black 
and gray birds ? Unquestionably, it seems to me, they represent 
macgillivraii of Audubon, and while he also placed the Louisiana 
and Texas birds under this name, there can be no doubt that, as- 
