1864.] | ON A COLLECTION OF BIRDS FROM PANAMA. 351 
54. Evcometis cassini1. (Pl. XXX.) 
Tachyphonus cassinii, Lawr. 1. c. vii. p. 297. 
This well-marked Tanager clearly belongs to the Hucometzs group. 
The sexes are alike; in Tachyphonus and Lanio they are always dif- 
ferently coloured. We have great pleasure in being able to give a 
figure of this fine species. 
55. TACHYPHONUS MELALEvCUS (Sparm.); Lawr. /.¢. vii. p.331, 
56. TacuypHonus Luctuosus (Lafr. & D’Orb.) ; Lawr. /. c. vii. 
p- 331. 
57. TacHyPHONUS DELATTRII (Lafr.); Lawr. l. ¢c. vil. p. 331. 
Two males of this species in the series agree with a New Grana- 
dian skin (Bogota make) in Sclater’s collection, except in the tri- 
flingly darker shade of the crest. Lafresnaye’s type was from Santa 
Buenaventura, on the west coast of New Granada; and the species 
was also obtained by the Darien expedition on the Truando. (See 
Cassin, 7. c. p. 149.) 
58. TACHYPHONUS XANTHOPYGIUS, Sclater, P. Z.8.1854, p.158, 
et 1855, p. 83, pl. 90; Lawr. l.c. vii. p. 331. 
A female of this beautiful species, which occurs also on the Tru- 
ando. (Vide Cassin, l.c. p. 142.) 
59. ARREMON AURANTIIROSTRIS, Lafr. Rev. Zool. 1847, p. 72; 
Lawr. J. c. vii. p. 298. 
Originally described by Lafresnaye from Panama, but ranges up 
the isthmus to the lowlands of Eastern Guatemala, where it is com- 
mon, and thence northwards into Southern Mexico. More northern 
specimens have, however, a broader pectoral band and stronger bill, 
and are perhaps specifically distinct. 
60. Satrator atriceps, Less.; Lawr. J. ¢. vii. p. 297. 
61. SALTATOR MAGNOIDES, Lafr, 
Both these Saltators are Mexican species which have here, as far 
as we know, attained their southernmost limits. Mr. Lawrence has 
described a Saltator belonging to this group from Panama (Pr. Ac. 
Nat. Sc. Phil. 1864, p. 106) under the title of S. intermedius. We 
are unable to recognize any tangible differences between our Panama 
and Central American specimens. A series of specimens from either 
locality would seem to include all the points of distinction by which 
Mr. Lawrence has separated the Panama bird; hence we are unwill- 
ing to adopt S. entermedius as a distinct form. 
62. SALTATOR ISTHMICUS, Sclater. 
S. striatipectus, Lawr. 1. c. vil. p. 331. 
A species founded by Sclater upon Panama skins. It requires to 
be carefully compared with the allied S, maculipectus, S, striati- 
