V< JjJ VI ] Chapman, The Seaside Sparrows. 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, $) 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 Isie, La., June 6-9, 1S96. 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 tnaritimus 

 from New York, differing from it to just about the same extent 

 and in much the same manner as do the peninsalee-tnarititniis 

 adults of this region from adult true tnaritimus. This bird is 

 apparently the offspring of peninsulx-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 peninsuhz-maritimus specimens, as I have 

 previously said, should, in my opinion, be identified with penin- 

 sula rather than with maritinins, 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 



