382 REVIEW OF AMERICAN BIRDS. [PART I. 
1.40; length of bill from forehead, .55, from nostril, .34, along gape, .62; 
tarsus, .60. 
The comparison of many specimens of the grayheaded Hylophilus 
of Guatemala, with others from Panama, exhibits, on the whole, the 
differences referred to, as stated by Mr. Lawrence, but they are ex- 
ceedingly slight, and may not unreasonably be referred to the influ- 
ence of season or locality. Of the three types of Mr. Lawrence, 
two, in which the olive green of the cap is most distinct, and the 
size least, are decidedly immature birds; the third (No. 400), how- 
ever, is adult, and although the color referred to is reduced in 
amount, it is still quite appreciable. 
Unmistakably adult specimens from Costa Rica and Nicaragua 
are still smaller than those from Panama, as shown by the measure- 
ments given above. They are even brighter yellowish above than 
in the type, the edges of some of the feathers almost yellow. Com- 
pared with Guatemalan skins of unmistakable decurtatus, the 
difference is very appreciable. 
A young bird, searcely full fledged, has the olive of back sated 
with buff, the top of head is dull sepia brown, and the olive of back 
is tinged with the same. 
I am not satisfied as to the existence of more than one species, 
but for the present retain puszllus, and await further evidence to 
determine the question. 
Smith-|Collec-| Sex sees 
ca Pon a eee Locality. Received from Collected b 
No. No. | Age. Collected. y 
37,366 | 69 | 9 | San Juan, Nic. 1865. H..E, Holland, |) ol an 
39,754 35 o& | Santa Rosa, C.R. |Jan.4,’65. | J.Carmiol | ...... 
34.671 oe ¢ | Angostura, C, R. June 10, ’64. Teenie Hayes 7: 
34,672 ate g “ June 8, °64, iii tee et 
34,673 as 0. oe June 12, 64. se ty UAE RMR 
39, 242 +. Q | Dota, C. R, July 22, 64. eur die es 
os ae g Panama, be Cab, Lawrence. M’Lean. & Galb. 
i: ““ 7 n 
174 | og “ ce “ i ap 
(400.) Type. (401.) Type. (174.) Type. 
LALETES, ScratTer. 
Laletes, Scuater, P. Z. §. 1861, 72. (Type L. osburnii.) 
General appearance that of a Vireo. The rather pointed wings, are longer 
than the narrow, nearly even, slightly rounded tail. First primary about half 
the second, which about equals secondaries ; the 4th quill longest. Bill deep 
and much compressed from base ; depth two-thirds the distance from nostril to 
tip. Culmen straight for basal third, then decurving to the hooked, deeply. 
notched bill; gonys also curved. Commissure slightly arched. Nostrils 
