502 
U. S P. R 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. 
Comparcdive measurements of species. 
Catal. 
No. 
Species. 
Locality. 
Sex. 
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 
3 
5.00 
2.76 
2.43 
0.73 
0 .G 6 
0.19 
0.44 
0.20 
0.42 
0.44 
Skin. 
5.00 
8.00 
2.75 
4075 
3 
5.00 
2.64 
2.38 
0.60 
0.67 
0.18 
0.44 
0.20 
0.40 
0.43 
.... 
5.50 
8.25 
2.75 
Fresh .... 
ofi4 5 
3 
4.80 
2.77 
2.36 
0.69 
0.69 
0.20 
0.46 
0 . 2 L 
0.41 
0.44 
5.66 
9.08 
2.90 
416 
Q 
4.74 
2.52 
2.12 
0.69 
0.69 
0.17 
0.46 
0.18 
0.40 
0.45 
5.40 
2.79 
2.37 
0.73 
0.70 
0.20 
0.46 
0.20 
0.40 
0.44 
3085 
5.30 
2.70 
2.41 
0.73 
0.70 
0.20 
0.50 
0.20 
0.40 
0.40 
5-50 
8.60 
3.80 
Fresh. 
1898 
$ 
5.00 
2.90 
2.41 
0.69 
0.69 
0.19 
0.46 
0.18 
0.43 
0.46 
Skin ...... 
6267 
....do. 
Posa creek. 
Q 
5.10 
2.69 
2.32 
0.68 
0.68 
0.19 
0.44 
0.20 
0.43 
0.48 
Skin. 
CYANOSPIZA PARELLINA, Baird. 
Cyanoloxia parellina, Bonap. Conspectus, 1850,502. 
? Pitylus lazulus, Lesson, Rev. Zool. 1842, 174. Speaks of chestnut. 
Sp. Ch. —General color dark blue, almost ultramarine, brightest on the rump, lesser 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, 2.50 ; tarsus, .75 ; bill about .45. 
Hub .—Northeastern Mexico to the Rio Grande. 
The hill 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 hill 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. 
4076 
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. 
8059 
J. Gould_ 
