218 NORTHERN ZOOLOGY. 



Iii this elegant and interesting bird we have a still further deviation from 

 the typical species ; and Nature has obviously begun the passage by which she 

 unites, by collateral affinity, the circle of the Sylvicolce with that of the Seto- 

 phagce. The shorter bill of <S. coronata, the brevity of the first quill feather, 

 the length of the bristles round the mouth, are all indications of an approach to 

 the structure of the fly-catching Setophagce. Accordingly we find that Wilson 

 makes the following remark : u Although the bill of this species obliges me 

 to arrange this bird with the Warblers (Sylvicola, Sw.), yet in his food and 

 all his motions he is decidedly a Fly-catcher (Setophaga, Sw.)." As the Sylvicola? 

 represent in their own circle the Gold-crested Warblers of Europe, — the two 

 genera in point of fact being parallel, — we accordingly see a striking analogy 

 between them : in both groups, and in no others of the family , do we find birds 

 with a bright golden crown. — Sw. 



[50.] 5. Sylvicola striata. (Swainson.) Black-poll Warbler. 



Sub-family, Parianae. Genus, Sylvicola, Swainson. 



Black-poll Warbler. Penn. Arct. ZooL, ii., p. 401, No. 290. 



Sylvia striata. Lath. Intl., iv., p. 527, sp. 07. 



Black-poll Warbler (Sylvia striata). Wilson, iv., p. 40, pi. 30, f. 3. Male ; very exact. 



Idem, vi., p. 101, f. 4. Female. 

 Sylvia striata. Bonap. Syn., p. 81, No. 115. 



Our specimen of this bird was killed by an Indian in the neighbourhood 

 of Cumberland House, in the latter end of May. He found it in a shady wood, 

 flying about among the upper branches of the trees : its stomach was filled 

 with musquitoes. It arrives in Pennsylvania about the 20th of April, and most 

 probably reaches the fur-countries about the middle of May, along with its 

 allied species ; but I am unable to throw any light on the extent of its range 

 to the north. Most of the small birds quit those quarters in the end of August 

 or beginning of September. It was seen by Mr. Say at Engineer cantonment 

 on the 26th of April. In the vicinity of New York, during the spring, it is one 

 of the most common birds. — R. 



The greater depression of the bill renders this the first aberrant species in 



