312 REVIEW OF AMERICAN BIRDS. [PART I. 
STELGIDOPTERYX, Bairp. 
Stelgidopteryx, Barrp, Birds N. Am. 1858, 312. ‘(Type Hirundo serri- 
pennis, AuD.) 
Bill rather small; nostrils oval, superior, margined behind, but scarcely 
laterally by membrane, but not at all overhung; the axes of the outline con- 
concealed white, but dark gray in the middle. Beneath white, all the 
feathers dark plumbeous at base; the breast with a grayish shade across it 
owing to the fact that the feathers there are grayish-brown, rather narrowly 
edged with white, less pure than on the throat, and allowing this gray to show 
through as well as among the whitish. The crissal feathers immediately 
behind the anus are white; the longer ones are white, or grayish-white at 
base, and then blackish, glossed with steel blue at the end. The axillars and 
inside of wings are brownish-gray. The sides of body under the wings are 
slightly soiled with gray. Bill black; feet apparently flesh color. 
(No. 21,039.) Total length, 5.00; wing, 3.90; tail, 2.55, perpendicular depth 
of fork, .40; difference of quills, 1.63; length of bill from forehead, .40, from 
nostril, .19, along gape, .51, width, .40; tarsus, .50; middle toe and claw, .60, 
claw alone, .16; hind toe and claw, .38, claw alone, .17. 
This species appears quite distinct from the cyanoleuca of Brazil, in slightly 
larger size, much larger bill and feet, absence of white in the interscapular 
feathers, and of bluish gloss on the lesser wing coverts ; lighter color of bases 
of feathers below; grayish breast, the feathers less tipped with white ; white 
feathers behind the anus, and whitish bases of the rest of crissal feathers (not 
black) ; lighter tibiz, etc. The lateral tail feathers are rather narrower, and 
not acuminated or attenuated at the end—the outline of inner web towards 
the end being convex, not concave. 
It is a question whether this is not the real H. cyanoleuca, of Vieillot, as 
based on Azara’s description. If so, the Brazilian cyanoleuca will take for 
name one of its synonyms. 
Stall 
Smith- Collec-| Sex When 
OSMAN eee Ss, | eg Locality. Received from Remarks. 
No. No. | Age. Collected. 
21,039 | 108 fof Uruguay. Sept. 1860. |Capt. T. J. Page, Pa- Chr. Wood. 
21,040 | 108 | @ ee “ “ Trana Expl. |: “ 
Atticora murina. 
??Hirundo cinerea, Gu. S. N. I, 1788, 1026 (based on L’Hirondelle de 
Perou, Briss. II, 1760, 498, ex Feuillé Journ. Obs. 1725).—Atticora 
cinerea, SCLATER, Catal. 1861, 39, no. 237. 
Petrochelidon murina, Cassin, Pr. A. N. Se. 1853, 370 (Ecuador).— 
Scuater, P. Z. S. 1860, 74. 
?Atticora cyanophxa, CaBanis, Jour. Orn. 1861, 92 (Bogota). 
Hab. Andes of South America. 
| 
Iam by no means satisfied that the bird of Brisson is the present species, 
