PTILOGONYS. 413 
(No. 30,719.) Plumage compact; rather silky. Wing considerably shorter 
than the tail, which is almost even, slightly emarginated, broad and some- 
what fan-shaped, the feathers widening from base to near tip; the central 
only with parallel edges to the rounded tip, and rather shorter than the 
lateral. First quill much less than half the 2d, contained about three times 
and a half in the longest (5th), faleate and rather acute; the 2d equal to 
10th ; the 3d about equal to 7th; the ends of the 2d and 3d quills attenuated 
and acute. Tarsi distinctly scutellate; rictal bristles moderate. 
Predominant color dark bluish-ash, scarcely lighter below; the head all 
round pale ash; the forehead, chin, and side of lower jaw almost white; the 
cheeks and the nape (mostly concealed by the incumbent crest) smoky ash ; 
eyelids white; lores and space below eye blackish. Quill- and tail-feathers 
glossy greenish-black, varied above only by a narrow border of the back- 
color, the quills abruptly edged internally with white, the axillars varied 
with the same, the tail feathers having the middle third of their inner webs 
white, in a rectangular patch. Anal region behind, and crissum rich Indian 
or egg yellow; the flanks posteriorly olive yellow. Tibie and middle.of belly 
white. Bill.and legs black. “Iris carmine” (Xantus). 
(No. 30,719.) Total length, 8.00; wing, 3.75; tail, 4.30; width of outer 
feather, .50; difference between 10th and longest quills, .80; exposed portion 
of first primary, .78, of 2d, 1.90, of longest (6th) (measured from exposed 
base of 1st primary), 2.90; length of bill from forehead, .55, from nostril, .28, 
along gape, .73; tarsus, .60; middle toe and claw, .65, claw alone, .20; hind, 
toe and claw, .45, claw alone, .22. 
Immature birds, perhaps females, differ in having the ashy tints 
of the body replaced by dirty brownish, of an umber or sepia tint, 
and traces of the same are not unfrequently,seen in. the more per- 
fectly plumaged specimens. Indistinct, scarcely appreciable spots 
of olive green are sometimes to be seen in the feathers of the back. 
Smith-/|Collec-| Sex 
sonian| tor’s | and Locality. Each ei Received from Remarks. , 
No. No. | Age. 3 
30,139 | 510 do | Sierra Madre, near | April, 1863. John Xantus. Length, 7.75; iris 
2,966 ie .. | Mexico. [Colima. aae S. F. Baird. .. [carmine, 
38,155 | 167 | Juv.| Orizaba. vine M. Botteri. seehne 
38,156 167 | Juv. oe er et MET foster pag 
30,719 | 377 .. | Duenas, Guat. 1861. On Salivan pe lke. haere 
30,720 |4,353 Sr hahy 8 of Nov. Ce ter IRE aN te kl ctotataers 
piejats 185 3 | Cordova. Be Cah, Lanvenee., |," . ...dh< 
Ptilogonys caudatus. 
Piilogonys caudatus, Capants, Jour. 1860 (May, 1861), 402 (Costa Rica). 
Hab. Mountains of Costa Rica. 
(No. 35,247.) Tail much graduated; the central feathers prélonged, and 
tapering gently from the middle to a rounded point; the others successively 
shorter; the lateral about two-thirds the length of central; feathers nar- 
rower than in cinereus (about .40), and scarcely widening from base to end. 
