20 TYRANNIDZ. 
and the spots on the wing-coverts not quite so prominent. Mr. Sclater regards this 
species as probably the same as P. ophthalmicus (Cat. Birds Brit. Mus. xiv. p. 98), over 
which name P. zeledoni has several years’ priority. 
SERPHOPHAGA. 
Serpophaga, Gould, Zool. Voy. Beagle, iii. p. 49 (1841) (type Sylvia subcristata, Vieill.). 
Serphophaga, Cabanis & Heine, Mus. Hein. ii. p. 53; Scl. Cat. Birds Brit. Mus. xiv. p. 101. 
Serphophaga consists of seven species widely distributed over South America as far 
south as the Argentine Republic. Only one species, the wide-spread Andean S. cinerea, 
enters our fauna as far as Costa Rica. 
Black, grey, and white are the prevailing colours of the various species of Serpho- 
phaga. They are all small birds, some of them with peculiar habits as described 
below. The bill of S. cinerea is rather wide for its length, the sides converging rather 
rapidly to the tip, the width at the rictus being about half the length of the tomia, 
the nostrils are open at the end of the nasal fossa, the rictal bristles not very well 
developed, considerably less than those of the foregoing genera, but more so than in 
Mionectes, which follows ; the tarsi and feet are rather stouter than in the preceding 
genera, the former being covered with scutelle; the wing is rounded, the 3rd quill 
slightly > the 2nd and 4th, Ist = 8th; tail moderate and slightly rounded, consider- 
ably < wing, < 3 tarsus. Wing a little > 3 tarsus. 
1. Serphophaga cinerea. 
Euscarthmus cinereus, Strick]. Ann. & Mag. N. H. xiii. p. 4147. 
Serpophaga cinerea, Scl. P.Z.S. 1858, p. 458°; Salv. P. Z.S. 1867, p. 147°; Ibis, 1869, p. 319‘; 
Boucard, P. Z. 8. 1878, p. 62°. 
Serphophaga cinerea, Cab. & Heine Mus. Hein. 11. p. 53°; Scl. & Salv. P.Z.S. 1879, pp. 5127, 
613°; Salv. Cat. Strickl. Coll. p. 304°; Tacz. Orn. Pér. ii. p. 286°; Scl. Cat. Birds Brit. 
Mus. xiv. p. 103. 
Serpophaga grisea, Lawr. Ann. Lyc. N. Y. x. p. 189”. 
Supra cinerea, uropygio fusco ; capite summo (aliquando albo medialiter notato) et lateribus nigricantibus ; alis 
et cauda ejusdem coloris, illarum tectricibus, hujus apice albido terminatis : subtus albida ; hypochondriis 
et crisso griseo tinctis: rostro et pedibus nigris. Long. tota 4:0, ale 2-0, caude 1-7, rostri a rictu 0°45, 
tarsi 0:6. (Descr. exempl. ex Costa Rica. Mus. nostr.) 
Hab. Costa Rica (Endres*, Carmiol!2), Naranjo (Boucard®); Panama, Santa Fé 
(Arcé *).—CotomBia’; Ecuapor 9; Peru !°; Borrvia 8, 
The only difference we can see between Central-American and Southern specimens is 
their small size, a character we seldom like to admit to be of specific value. In the 
present case there is more difference between two examples from Sical in Ecuador than 
between any of the Central-American and the other South-American specimens before 
us, so that size cannot here be considered of much importance. 
The other characters referred to by Mr. Lawrence when defining his 8. grisea as 
