64 MANUAL 



maries considerably longer than the secondaries. 

 Tail forked. 



Genera, Centronyx, Passerculus, and Pooccetes. 



b. — Moderately streaked above, on the sides, and 

 on the breast ; the dorsal streaks broader, the others 

 fainter, than in the last. Wings short, reaching a 

 little beyond the base of the tail. Not much dif- 

 ference between the primaries and secondaries. Tail 

 short, graduated, and the feathers lanceolate, acute. 



Genera, Coturniculus and Ammodramus. 



B. — Tail longer and broader ; nearly or quite as long, some- 

 times a little longer, than the wings, which are rather length- 

 ened. The primaries considerably longer than the second- 

 aries. None of the species streaked beneath, and the back 

 alone streaked above. 



a. — Tail rounded or slightly graduated. 



Genera, Chondestes, Zonoirichia, Jnnco, and Poospiza. 



b. — Tail decidedly forked ; a little shorter than the 

 wing, sometimes a little longer. 



Genus, Spizella. 



C. — Tail lengthened and graduated ; decidedly longer than 

 the wings, which are very short, scarcely extending beyond 

 the extreme base of the tail. Feet reaching but little beyond 

 the middle of the tail. Species all streaked above ; streaked 

 or nearly unicolor beneath. No white on wings or tail. Outer 

 lateral toe the longer. First quill not the shortest of the 

 primaries. 

 Genera, Melospiza and Peuccea. 



D. — Tail rather short, and much graduated ; longer than the 

 wings: the midrib more median. Culmen curved. Tarsus 

 considerably longer than middle toe. Outer toe longer. But 

 little difference in the length of the quills ; the outer ones 



