102 University of California Publications in Zoology. \Vou-5 
condition in Passerella iliaca iliaca, whence it might be inferred 
that iliaca is more nearly like the ancestral stock of stephensi. 
Passerella stephensi is the largest of any of the nine recog- 
nized forms of Passerella; the bill is proportionately much larger 
—a huge affair, in fact, almost as bulky as that of the black- 
headed grosbeak. The following measurements in millimeters of 
a few selected adults show extreme and average dimensions: 
Bill along Ramus Depth of Bill 
No. Sex Wing Tail Culmen of Lower Mandible at Base 
6547 6 87 95 15 ’ 17.4 14 
6800 6 87 99 15.2 17.5 14.6 
7311 6 88 101 14.4 15.7 13.8 
8 88 99 15 17 14.5 
2 82 90 14.3 16.7 13.6 
2 85 2 15 17.4 14 
io) 84 98 14.2 16.9 13.6 
2 84 91 14.6 17.2 14 
Pipilo maculatus megalonyx (Baird). Spurred Towhee. 
This bird was a characteristic inhabitant of the Upper Sono- 
ran serub oak belt. It was found on the south side of the ranges 
as high as 7000 feet. A few were seen as far up the Santa Ana 
as the mouth of Fish creek, 6500 feet. 
A nest containing four eges was found near the ‘‘ Cedar 
Cabin,’’ 5500 feet altitude, on the Santa Ana, July 14, 1907. 
It was in a depression in the ground at the base of a sage and 
si 
consisted of weathered grasses and cottonwood bark strips, lined 
with fine round grasses. There were three husky looking young 
in this nest ten days later and these had left the nest by July 27. 
On the opposite side of the sage stalks, and only seven inches 
from the oceupied nest, was another very similar nest, somewhat 
dilapidated, doubtless used the previous year. (See pl. 16a.) 
That the young-of-the-year are inclined to wander is shown 
by an oceasional strageler noted out of the usual range of the 
species. For instance a full-grown juvenal was taken on July 
27, 1905, between Bluff lake and Bear lake in a chinquapin patch. 
The species was sparingly met with in the pinyon belt, bemg 
noted around Doble, north slope of Sugarloaf, and at Cactus Flat. 
Several juvenals were seen at Cushenbury springs on the edge 
of the desert early in August. Six specimens were taken. 
