46 TYRANNIDA. 
of the existence of this species in Ecuador, Peru, or Bolivia. It thus appears that its 
range hangs to the northern and eastern portions of South America rather than to the 
western. 
8. Pitangus albovittatus. 
Pitangus albovittatus, Lawr. Ibis, 1862, p. 11°; Ann. Lyc. N.Y. vi. p. 471°; Sel. Cat. Birds Brit. 
Mus. xiv. p. 178°. . 
Supra olivaceus; alis et cauda nigricanti-fuscis vix olivaceo limbatis; pileo et litura a rostro utrinque per 
oculos ducta nigricanti-brunneis, superciliis latis ad nucham conjunctis albis, stria verticali lete flava 
aurantio haud tincta: subtus flavus, gula alba; subalaribus flavis, remigum pogonio interno flavido-albo, 
haud castaneo: rostro brevi ad basin lato, robusto, nigro ; pedibus nigris. Long. tota 6°3, ale 3°15, caude 
2-6, rostri a rictu 0°9, tarsi 0°65. (Descr. maris exempl. typ. ex Panama. Mus. G. N. Lawrence.) 
Hab. Panama, Line of Railway (I Leannan & Galbraith! *). 
This bird differs in many respects from P. lictor, which is also found on the Isthmus 
of Panama. It has a shorter stouter bill, the crest is wholly yellow without any 
admixture of orange, the back is more olivaceous, and neither the rump nor the 
margins of the wings above or below have any chestnut colour. 
The bird also somewhat resembles in general colour Myiozetetes cayennensis, but 
that species, besides its smaller bill with its curved culmen, has an orange crest, and the 
edges of the wing-feathers inside and out are, like those of Petangus lictor, chestnut. 
We have recently had an opportunity of examining Mr. Lawrence’s type, which is the 
only specimen we have seen. It was contained in one of M‘Leannan and Galbraith’s 
collections made on the line of the Panama Railway. 
So like is P. albovittatus in general colour to M. cayennensis and P. lictor that its 
apparent rarity may be due to its having been mistaken by collectors for one or other 
of those birds. 
SIRYSTES. 
Sirystes, Cabanis & Heine, Mus. Hein. ii. p. 75 (1859) (type S. sidzlator) ; Sel. Cat. Birds Brit. 
Mus. xiv. p. 181. 
Sirystes contains three rather closely allied though sufficiently defined species, whereof | 
S. albogriseus is alone found in the State of Panama, S. albocinereus in the Amazons 
valley, and S. stbilator in Eastern Brazil. In coloration they somewhat resemble the 
Antillean species of Pitangus, but are destitute of the occipital crest. 
In many respects Strystes resembles Pitangus, but the bill is not nearly so strong, 
and is wider in proportion to its length, the width at the gape being half the length of 
the tomia, the sides are slightly concave, the supranasal feathers cover the nostril, and 
the rictal bristles are strong; the tarsi and feet are more feeble than in Pitangus; the 
2nd, 8rd, and 4th quills are longest, lst = 7th; the tail is rather long = 3 wing, tarsus 
< + wing. 
