572 DR. O. FINSCH ON THE BIRDS OF TRINIDAD. [June 23, 
Long. al. eaud. rostr. lat.ad bas. tars. dig. med. 
4’ 3nr gn yy 13!" ait gi gi (Trinidad.) 
4 0 2 9 13 64 9 — (Trinidad.) 
4 3 3f2u0 124 7 9 64 (Demerara. ) 
4 54 3. 2 13 ‘A 9 7 (Costa Rica.) 
4 5 a 114 7 9 — (Brazil.) , 
4 2 3. 0 14 h 9 64 (Brazil.) 
4 6 3. 2 14 74 9 — (Brazil, Ceara.) 
51. TyRANNUS MELANCHOLICUS, Vieill. 
Laphyctes melancholicus et L. satrapa, Cab. M. H. ii. pp. 76, 77. 
Tyrannus melancholicus et T. satrapa, Scl. Cat. p. 235. 
Tyrannus melancholicus, Taylor, 1. e. p. 87. 
Tyrannus verticalis, Léot. (nec Say) p. 213. 
A younger specimen, without red patch on the crown; the first 
primaries not attenuated at the apex. 
There is no difference whatever between specimens from Venezuela 
(Angostura) and the Argentine republic (Mendoza) ; the separation 
into two representative species for the north and south has there- 
fore no real value. In contradiction to the views of Dr. Cabanis, I 
agree with Von Pelzeln in considering 7’. albigularis, Burm. (Bras. ii. 
p- 465), to be specifically different from 7’. melancholicus. A speci- 
men from Brazil in the Bremen Museum shows the chin and throat 
decidedly white; whereas these parts in 7’. melancholicus are whitish 
grey. Four specimens from Northern Brazil (Ceara) all show this 
latter character. 
lat. rostr. 
Long. al. rectr. ext. rect.med. rostr. ad bas. tars. 
ay ym gir git gt git gait 5!" 8!" (melancholicus, Trinidad.) 
4 3 3.5 29 9 Ht) 8  (melancholicus, Venezuela.) 
4-5 3.5 2 9 9 a) 8  (melancholicus, Mendoza.) 
4 3 34 o- 0 9 53 — (6, albigularis, Brazil, Ceara.) 
3 9 are —— 94 5 — (Q, albigularis, Brazil, Ceara.) 
42 3.5 21) 83 45 8  (albigularis, Brazil.) 
52, Mitvu.us tyrannus (L.); Léot. p. 217. 
Milvulus tyrannus et violentus, Scl. Cat. p. 237. 
One specimen not quite in full plumage, and the yellow feathers 
on the crown just developing. 
The northern and southern forms of this species do not merit a 
specific separation ; at least I cannot find any character which proves 
to be constant. According to Dr. Cabanis, the Brazilian M, vio- 
lentus may be distinguished in having a darker-coloured back ; but 
in one specimen from Rio Grande do Sul, on the contrary, I find 
the back lighter, whereas in another specimen from the same locality 
the back is as dark as in a specimen from Trinidad, which agrees in 
every respect with two others from Bolivia. A younger specimen 
from Demerara has the upper parts washed with brown. 
Milvulus monachus, Wartl., is based upon a young specimen, as 
described by Von Pelzeln (Orn. Bras. ii. p. 118, Anmerk. 2). This 
