102 rALCONIDA\ 



almost co-extensive with that of the genus Leptodon. Its larger-billed representative, 

 M. megarhynchus, appears to be a more western bird, and is found from Bolivia and 

 Peru, northward to Western Mexico. The third species, B. wilsoni, is confined to 

 the island of Cuba. 



1. Eegerhinus unciuatus. 



Falco uncinatus, Temm. PI. Col. 103, 104, 105 '. 



Cymindis uncinatus, Scl. & Salv. Ibis, 1859, p. 219 ' ; P. Z. S. 1864, p. 369 ' ; Lawr. Ann. Lye. 



N. Y. ix. p. 134 ^ 

 Leptodon uncinatus, Sharpe, Cat. Birds Erit. Mus. i. p. 330"; Boucard, P. Z. S. 1878, p. 45 '. 

 Regerhinus uncinatus, Kaup, Kidgw, Bull. U. S. Geol. & Geogr. Surv. ii. p. 156' ; Nutting, Pr. 



U. S. Nat. Mus. V. p. 403 ". 



Supra schistaceus, unicolor : subtus dilutior, abdomioe toto stricte albo transfasciato, tectricibus subcaudalibus 

 albidis ; subalaribus schistaceis albo transfaseiatis, remigibus nigris griseo transfasciatis ; cauda nigra, 

 albo terminata et griseo bifasciata : rostro phimbeo, mandibula et pedibas flavidis ; cera et loris 

 viridibus ; iride alba. Long, tota circa 17-5, alae 11"0, caudse 8"0, tarsi 1'4. (Descr. exemj)!. ad. ex 

 Yucatan. Mus. nostr.) 



Forma alia. Saturate schistaceus, fere unicolor ; cauda nigra albido terminata, fascia lata mediana alba. 



Fmtna alia. Fuliginosus, unicolor ; cauda nigricaute, fasoiis duabus sordide albis notata ; remigibus subtus 

 albido maculatis. 



Juv. Fuscus, plumis stricte rufo limbatis, cervice postica et corpore subtus albis, hoc fusco fasciato ; tibiis 

 rufo fasciatis ; alis subtus stricte fulvo fasciatis, remigibus nigris griseo fasciatis ; cauda nigra, fnsco- 

 albido trifasciata. 



Hab. Mexico, Buctzotz in N. Yucatan [Gaumer) ; Guatemala {Skinner^) ; Costa Rica, 

 San Jose {Frantzius% Naranjo [Boncard^), La Palma {Nutting^), Barranca 

 {E. Arce) ; Panama (JE. Arce, Beeves'^), Lion Hill (M'Leannan ^). — South America 

 to Bolivia °. 



Sent us by Skinner from Guatemala and recorded by M. Boucard® as having been 

 found by him in April in Costa Rica, where he says its cry resembled that of a 

 Peacock, and though occurring in several places in that country the species is nowhere 

 plentiful. 



Mr. Nutting also relates that at La Palma, in the Gulf of Nicoya, this Kite is 

 frequently heard, especially in the evening. 



2. Eegerhinus megarhynchus. 



Regerhinus megarhynchus, Des Murs, in Casteln. Voy., Ois. p. 9, t. 1 (1855) ^ ; Ridgw. Bull. U. S. 



Geol. & Geogr. Surv. ii. p. 160' ; Gurney, Ibis, 1880, p. 318'.' 

 Leptodon megarhynchus, Sharpe, Cat. Birds Brit. Mus. i. p. 332*. 

 Cymindis uncinatus (nee Temm.), Lawr. Bull. U. S. Nat. Mus. no. 4, p. 43 \ 

 Leptodon uncinatus (nee Temm.), Sumiehrast, La Nat. v. p. 237 °. 



B. uncinato similis, sed rostro valde majore et crassiore ; cera lorisque viridibus ; macula suboculari flava - 

 pedibus aurantiacie ; iride alba. Long, tota circa 17-0, alse 12-4, caudae 8-4, culra. 1-7, tar&i 1-5. (Descr! 

 exempl. ex Tonala, Chiapas. !Mus. nostr.) 



