432 NORTH AMERICAN BIRDS. 
Darker and richer colored throughout than in 
either M. heermanni or M. samuelis, the gen- 
eral size much as in former, but bill much 
more slender and tarsi longer; wing 2.50- 
2.80 (2.62), tail 2.50-2.70 (2.60), culmen .52- 
55 (.54), depth of bill .22-.27 (.25), tarsus .90- 
.95 (93). Hab. Southern Mexico (Puebla, 
Valley of Mexico, etc.). 
M. fasciata mexicana Ripaw. Mexican Song 
Sparrow. 
é. Streaks on back rusty, usually without blackish shaft-line; 
streaks on chest clear rusty or rufous; length 6.10-6.50, 
wing 2.40-2.73 (2.59), tail 2.65-3.05 (2.83), culmen .49-.52 
(51), depth of bill .27-.29 (.28), tarsus .81-.90 (.86). Hab. 
Arizona (in lower districts). 
(68.) 58la. M. fasciata fallax (Bairp). Desert Song Sparrow. 
d. Markings of plumage more or less obscured by the prevalent dull 
rusty or sooty coloring. 
é. Smaller, with general tone of coloration more rusty ; length 
about 6.00-7.00, wing 2.43-2.83 (2.63), tail 2.40-2.98 (2.73), 
culmen .53-.58 (.55), depth of bill .26-.30 (.28), tarsus .87- 
92 (.90). Eggs 82 x .59. Hab. Pacific coast district, 
breeding from western Oregon (and northern California ?) 
north to British Columbia (Vancouver Island, etc.). 
58le. M. fasciata guttata (Norv.). Rusty Song Sparrow. 
é&. Larger, with general tone of coloration more sooty; length 
about 6.50-7.50, wing 2.62-3.05 (2.87), tail 2.65-3.18 (2.89), 
culmen .56-.61 (.58), depth of bill .25-.28 (.27), tarsus .95- 
1.05 (1.00). Hab. Coast of southern Alaska (and northern 
British Columbia ?). 
5817. M. fasciata rufina(Branpt). Sooty Song Sparrow. 
ce. Wing more than 3.10, culmen .64, or more. 
Plumage much as in M. rufina, but decidedly grayer ; length about 
7.50-8,75, wing 3.20-3.50 (3.36), tail 3.08-3.60 (3.44), culmen .64-— 
.72 (.69), depth of bill .30-.32 (.31), tarsus 1.05-1.15 (1.11). Hggs 
.89 x .65. Hab. Aleutian Islands, and east to Fort Kenai, Alaska. 
(69.) 582. M. cinerea (GmeL.). Aleutian Song Sparrow. 
b, Adult with chest grayish (tinged with brown in winter), very indistinctly 
or not at all streaked or otherwise marked ; top of head plain chestnut, 
becoming black on forehead and sides of occiput, or else very broadly 
streaked with black and divided by a more or less distinct median line 
of light ashy or dull buffy; postocular streak dusky. 
Adult: Sides of head and neck, together with chest, ashy, tinged with 
1 Melospiza melodia, var. i Rivew., in Hist. N. A. B. ii. 1874, 18. 
