RHAMPHOCZANUS. 219 
occurs, within the limits of ourcountry. The whole genus has a wide range in Tropical 
America, the most southern member occurring in South-eastern Brazil. 
1. Rhamphocenus semitorquatus. 
Rhamphocenus semitorquatus, Lawr. Ann. Lyc. N. Y. vii. p. 4691; ix. p. 1087; Salv. P. Z.S. 1867, 
p.- 145°; 1870, p.195*; Boucard, P. Z. 8. 1878, p. 61°; Zeledon, An. Mus. Nac. Costa 
Rica, 1887, p. 115°; Scl. Cat. Birds Brit. Mus. xv. p. 2627. 
Rhamphocenus cinereiventris, Scl. & Salv. P. Z. S. 1879, p. 525 (nec Scl. ?) *. 
Supra rufescenti-murinus, pileo rufescentiore; capitis et cervicis lateribus rufis, hoc colore infra nigro margi- 
nato: subtus gula alba, abdomine toto cinereo, pectore nigro striato ; cauda nigricanti-brunnea, rectricitus 
immaculatis: rostri maxilla nigricanti, mandibula albida, pedibus obscure corylinis. Long. tota 3:7, 
ale 2:0, caude rectr. med. 1:1, rectr. lat. 0-9, rostri a rictu 0-9, tarsi 0-9. (Descr. maris ex Veraguas, 
Panama. Mus. nostr.) 
© mari similis, 
Hab. Costa Rica, La Balsa (Carmiol”), Ric Sucio (Zeledon °), San Carlos (Boucard ®) ; 
Panama, Santiago de Veraguas *, Calovevora 4 (Arcé), Lion Hill (If‘Leannan ' 6),-- 
CoLomBia8, 
This species must for the present be considered doubtfully distinct from R. cinerei- 
ventris, a bird described and figured by Mr. Sclater in 1855 from a specimen now in 
the Derby Museum at Liverpool, obtained by Delattre at Pasto in Colombia. At our 
request the type has been kindly lent us for re-examination, and we can now affirm that 
a male from Veraguas in our collection exactly agrees with it in all respects except that 
it lacks the conspicuous brown postocular stripe that exists in the type as shown in 
Wolf's drawing. There is just a trace of this stripe in one of our specimens, but in 
the rest it is absent. Our impression is that this stripe is not constant; and if so 
Mr. Lawrence’s name will have to be placed as a synonym of R. cinereiventris, a course 
adopted by Sclater and Salvin in 18795. Tf, however, the receipt of more specimens 
confirms the differences now apparent, R. semitorguatus must stand, but the bird called 
ft. cinereiventris in Mr. Sclater’s Catalogue, from Sarayacu in Ecuador, having no post- 
ocular spot whatever must be either considered distinct from both described species or 
merged with &. semitorquatus. 
The range of this species in our country is limited to Costa Rica and the State of 
Panama, but it appears to be everywhere rare. The first specimens procured were 
from the line of Railway’. A small number were afterwards sent us by our coliector 
Arcé from the neighbourhood of Santiago de Veraguas , and it has also been found by 
several of the collectors of Costa Rica 25°, 
2. Rhamphocenus rufiventris. 
Scolopacinus rufiventris, Bp. P. Z.S. 1837, p. 119%. 
Rhamphocenus rufiventris, Gray, Gen. B. i. p. 157, t. 47. f. 2°; Sel. P.Z.S. 1857, p. 202°; 1859, 
28% 
