468 momotidtE. 



Prionirhynchus platyrhynchus, Scl. P. Z. S. 1857, p. 256"; Scl. & Salv. P. Z. S. 1864, p. 362''; 

 1867,p.279»; Salv. P. Z. S. 1867, p. 151'; Ibis, 1872, p. 321 " ; Lawr. Ann. Lye. N. Y, 

 ix. p. 117 " ; V. Frantz. J. f. Orn. 1869, p. 311''; Zeledoa, An. Mus. Nac. Costa Rica, 1887, 

 p. 119"; Sharpe, Cat. Birds Brit. Mus. xvii. p. 315 ". 



Crypticus martii, Bp, (necSpix) P. 2. S. 1837, p. 119''; Consp. Av. i. p. 165 ". 



Supra viridis, capite, cervice et pectore Isete castaneis, loris et regions suboculari et auricularibus nigris, plaga 



permagna pectorali quoque nigra, mento et abdomine viridibus ; alis nigris, extrorsum viridi limbatis ; 



Cauda sabtus nigra, supra viridi, rhachidibus et rectricibus duabus mediis ad apicem nigris ; rostro nigro ; 



pedibus saturate corylinis. Long, tota circa 12-0, alse 4'3, caudae reetr. med. 6*8, rectr. lat. 2'0, rostri a 



riftu 1'75, tarsi 0-7. (Deser. maris ex Panama. Mus. nostr.) 

 5 mari similis. 



Hah. Nicaragua, Chontales {Belt ^°), Blewfields ( WicMam ^) ; Costa Kica {v. Frant- 

 zius'^^), Atirro [Carmiol^^), Barranca, Angostura (Carmiol ^^ Zeledon'^^), Jimenez 

 (Zeledon^^) ; Panama, Santa Fe {ArcS ^), Lion Hill (M'Leannan ^ ''), Chepo {Arce'^^), 

 R. Nercua (C. J. Wood ^). — South America, from Colombia ^^ to Ecuador and 

 Upper Amazons Valley i*. 



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. 



Prionomis 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 Colombia and in Eastern Ecuador and Peru. 

 Its range therefore almost exactly corresponds with that of Baryphthengus martii, but it 

 has not yet been found in Western Ecuador or in Bolivia. 



Of its habits we can find nothing recorded. 



2. 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. S. 1857, p. 257, t. 128*; 1858, p. 357°; Scl. & Salv. Ibis, 



1859, p. 132 «; Taylor, Ibis, 1860, p. 117'; Salv. Ibis, 1872, p. 321 ^ Boucard, P. Z. s! 



1878, p. 49 ' ; Ridgw. Pr. U. S. Nat. Mus. x. p. 591 " ; Sharpe, Cat. Birds Brit. Mus. xvii. 



p. 316". 



Supra omniuo viridis, fronte tantum castaneo tincta, superciliis laete caeruleis ; loris, regione suboculari et tectrici- 

 bus auricularibus nigris, plaga. permagna pectorali quoque nigra: subtus viridis pallidior, mento tantum 

 caeruleo ; subalaribus obscure castaneis ; cauda caeruleo-viridi, rectricibus mediis nigro terminatis ; rostro 

 nigro ; pedibus obscure corylinis. Long, tota circa 12-0, alse 4-5, caudse rectr. med. 6-8, rectr. lat. 2-05, 

 rostri a rictu 1-85, tarsi 0-7. (Descr. exempl. ex Belize, Brit. Honduras. Mus. nostr.) 



