468 : MOMOTIDZ. 
Prionirhynchus platyrhynchus, Scl. P. Z. 8. 1857, p. 256°; Scl. & Salv. P.Z. S. 1864, p. 3627; 
1867, p. 279°; Salv. P. Z. S. 1867, p. 151°; Ibis, 1872, p. 321"; Lawr. Ann. Lyc. N.Y. 
ix. p. 117"; v. Frantz. J. f. Orn. 1869, p. 311"; Zeledon, An. Mus. Nac. Costa Rica, 1887, 
p- 119"; Sharpe, Cat. Birds Brit. Mus. xvii. p. 315“. 
Crypticus martii, Bp. (nec Spix) P. Z. S. 1837, p. 119°; Consp. Av. i. p. 165". 
Supra viridis, capite, cervice et pectore late castaneis, loris et regione suboculari et auricularibus nigris, plaga 
permagna pectorali quoque nigra, mento et abdomine viridibus ; alis nigris, extrorsum viridi limbatis ; 
cauda subtus nigra, supra viridi, rhachidibus et rectricibus duabus mediis ad apicem nigris ; rostro nigro ; 
pedibus saturate corylinis. Long. tota circa 12-0, ale 4:3, caude rectr. med. 6:8, rectr. lat. 2°0, rostri a 
rictu 1°75, tarsi 0°7. (Deser. maris ex Panama. Maus. nostr.) 
© mari similis. 
Hab. Nicaragua, Chontales (Belé 1°), Blewfields (Wickham ®); Costa Rica (v. Frant- 
zius!*), Atirro (Carmiol™), Barranca, Angostura (Carmiol 11, Zeledon 1%), Jimenez 
(Zeledon8); Panama, Santa Fé (Arcé®), Lion Hill (d‘Leannan*"), Chepo (Arcé1*), 
R. Nercua (C. J. Wood+)—Sovutn America, from Colombia !® to Ecuador and 
Upper Amazons Valley ™. 
The similarity of the colour of the plumage of this bird to that of Baryphthengus 
martii has led to their being mistaken for the same species. But besides the smaller 
size of the present bird, a glance at the formation of the bill of the two birds at once 
reveals their complete distinctness. 
Prionornis platyrhynchus was described by Leadbeater in 1833, and shortly after- 
wards figured in Jardine and Selby’s ‘Illustrations of Ornithology’; but for many 
years little was known about it until specimens were obtained on the Isthmus of Darien 
by Lieut. Michler’s party, and shortly afterwards others were secured by M‘Leannan on 
the Line of the Panama Railway. We now know of its occurrence throughout the 
State of Panama, in Costa Rica, and in the eastern provinces of Nicaragua. It occurs 
also in the valley of the Cauca river in Culombia and in Eastern Ecuador and Peru. 
Its range therefore almost exactly corresponds with that of Baryphthenqus martii, but it 
has not yet been found in Western Ecuador or in Bolivia. 
Of its habits we can find nothing recorded. 
°. Prionornis carinatus. 
Prionites carinatus, DuBus, Bull. Ac. Brux. xiv. pt. 2, p. 108'; Rev. Zool. 1848, p. 249 *. 
Crypticus carinatus, Bp. Consp. Av. i. p. 165°. 
Prionirhynchus carinatus, Scl. P. Z. 8. 1857, p. 257, t. 128*; 1858, p. 357°; Scl. & Salv. Ibis, 
1859, p. 182°; Taylor, Ibis, 1860, p. 117"; Salv. Ibis, 1872, p. 821°; Boucard, P. Z. S. 
1878, p. 49°; Ridgw. Pr. U.S. Nat. Mus. x. p.591*°; Sharpe, Cat. Birds Brit. Mus. xvii. 
p. 816”. 
Supra omnino viridis, fronte tantum castaneo tincta, superciliis lete ceruleis ; loris, regione suboculari et tectrici- 
bus auricularibus nigris, plaga permagna pectorali quoque nigra: subtus viridis pallidior, mento tantum 
ceruleo ; subalaribus obscure castaneis ; cauda ceruleo-viridi, rectricibus mediis nigro terminatis ; rostro 
nigro ; pedibus obscure corylinis. Long. tota circa 12:0, ale 4:5, caude rectr. med. 6°8, rectr. lat. 2°05, 
rostri a rictu 1-85, tarsi 0°7. (Deser. exempl. ex Belize, Brit. Honduras. Mus. nostr.) . 
