502 U. S r. E R. EXP. AND SURVEYS — ZOOLOGY GENERAL REPORT. 
there seems little doubt that the former name cannot he retained for the present group. 
Passerina of Vieillot, if otherwise applicable, is preoccupied in Botany. 
Comparative measurements of specie 
Catal. 
Species. 
Locality. 
Length. 
Stretch of 
wings. 
Wing. 
Tail. 
Tarsus. 
Middle toe. 
Its claw 
alone. 
Hind toe 
and claw. 
Hind claw 
alone. 
Bill above. 
Along gape. 
Specimen 
measured. 
4076 
(In.. 
Cyanospiza parellina... 
Sierra Madre, N. Leon . 
8 
5.00 
5.00 
5.00 
5.50 
8.00 
2.76 
2.75 
2.64 
2.75 
2.77 
2.90 
2.52 
2.79 
2.70 
3.80 
2.90 
2.69 
2.43 
0.73 
0.66 
0.19 
0.44 
0.20 
0.42 
0.44 
4075 
ilo.... versicolor . . 
8 
2.38 
2.36 
0.60 
0.67 
0.18 
0.20 
0.44 
0.46 
0.20 
0.21 
0.40 
0.41 
0.43 
0.44 
Fresh 
Skin 
2645 
8 
9.08 
416 
3085 
ilo do. , 
d< ciris 
do do 
do 
San Antonio, Texas 
9 
8 
8 
4.74 
5.40 
5.30 
5-50 
5.00 
5.10 
2.12 
2.37 
2.41 
0.69 
0.73 
0.73 
0.69 
0.70 
0.70 

0.17 
0.20 
0.20 
0.46 
0.46 
0.50 
0.18 
0.20 
0.40 
0.40 
0.40 
0.45 
0.44 
0.40 
8.60 
1898 
6267 
do . . . . amoena 
do do 
8 
Q 
2.41 
2.32 
0.69 
0.68 
0.69 
0.19 
0.19 
0.46 
0.44 
0.18 
0. 20 
0.43 
0.43 
0.46 
0.48 
CYANOSPIZA PABELLINA, B a i r d . 
Cyanoloxia parellina, Bonap. Conspectus, 1850,502. 
1 PUylas lazulus, Lesson, Rev. Zool. 1842, 174. Speaks of chestnut. 
Sp. Ch. — General color dark blue, almost ultramarine, brightest on the rump, lessor wing coverts and top of head, shading 
on the hood to whitish blue on the forehead. Sides of head, including lores, and chin, with tail black. A few blue feathers 
on the lower jaw below the eye. Bill black. Length 5 inches ; wing, 2.50 ; tail, 2.60 ; tarsus, .75 ; bill about .45. 
Hab. — Northeastern Mexico to the Rio Grande. 
The bill of this species though full and turgid, is not as deep as that of Guiraca coerulea, 
the lower not larger than the upper. The wing is much rounded ; the fourth quill longest, the 
third and fifth little shorter ; the second and sixth about equal ; the first not longer than the 
secondaries. In Guiraca coerulea the second is longest, the first rather shorter than the fourth. 
The tail is nearly even ; very slightly emarginate and rounded. 
A specimen received from Mr. Gould has the bill longer and not so black as that of Lieut. 
Couch. 
This species connects Cyanospiza with Guiraca, and may possibly be entitled to separate 
generic rank. 
List of specimens. 
Catal. 
No. 
Locality. 
When collected. 
Whence obtained. 
Orig. 
No. 
Length. 
Stretch 
of wings. 
Wing. 
Remarks. 
407G 
8059 
Sierra Madre, New 
Leon, Mexico. 
Tamaulipas, Mex 
April—, 1853 
Lt. Couch 
154 
5. 00 
8. 50 
2. 75 
Eyes br'wn, bill bl'k, 
feet slate color. 
1 
