1870.] MR. O. SALVIN ON THE BIRDS OF VERAGUA. 203 
indeed their growth is seldom quite symmetrical ; and therefore this 
character cannot be relied on as specific in every case. As regards 
the colour, I notice the difference pointed ont in some instances, but 
not in all; so that this character, too, is untrustworthy. It is true 
that the general tendency of the Costa-Rican race is to have shorter 
and narrower caudal plumes than the Guatemalan ; but this is all that 
can be said, and I do not think it possible to give unfailing characters 
by which the two races can be distinguished with certainty. 
122. Nycrisrus samarcensis (Gm.); Scl. P. Z. S. 1866, p. 129. 
A fine specimen of this species agrees with Jamaican examples in 
Sclater’s collection, but is somewhat smaller than the Guatemalan 
skin, whose dimensions are given by Sclater (/.c.). Cabanis (J. f. Orn. 
1869, p. 314, note) seems to consider N. cornutus, Vieill., distinct 
from N. jamaicensis, but assigns no reasons. Sclater places the 
former name as a synonym of N. jamaicensis, and looks upon the 
Jamaican aud continental birds as one and the same species. As the 
dimensions of several specimens are given in Sclater’s monograph, I 
add the measurement of this specimen: long. tota 15-0, ale 11-0, 
caudze 8:0, lat. rostri 2-2. It will be seen that these measurements 
almost exactly correspond with those of one of the Jamaican skins 
before referred to. 
123. CHORDEILES POPETUE, Vieill. 
Calovevora. 
A single skin agrees with North-American examples. The species 
likewise occurs at Panama (Scl. & Salv. P. Z.S. 1864, p. 364). 
124. ANTROSTOMUS CAROLINENSIS (Gm.); Scl. P. Z. S. 1866, 
p- 136. 
V. de Chiriqui. 
Also found in Guatemala and Costa Rica, but not southward of the 
point here recorded. 
125. ANTROSTOMUS SATURATUS, sp. n. 
3. Nigricans, rufo maculatus : alis nigris, extus solum rufo nota- 
tis, speculo alari nullo: subtus niger, rufescente transfasciatus, 
vitta gulari alba nulla, maculis albidis in medio ventre positis : 
cauda nigra rufo transfasciata: rectricibus tribus utrinque 
externis albo late terminatis, setis rictalibus longissimis: long. 
tota 8:5, ale 6°1, caude 48. 
Hab. V. de Chiriqui (Arcé). 
Obs. A. nigrescenti (Cab.) (Scl. P. Z. S. 1866, p. 138) affinis, 
sed rectricibus latiore albo terminatis, vitta quoque gulari et speculo 
alari absentibus, distinguendus. 
This species, although I have compared it to A. nigrescens, be- 
longs to section A of the Antrostomi, according to Sclater’s arrange- 
ment (/. c. p. 136), having no white bar nor markings of any sort 
on the wing. It is of about the same size as A. nigrescens. The 
single skin sent does not show any white bar upon the throat but 
