( 403 ) 



160. Trogon atricollis atricollis \ r ieill. 



Trogon atricollis Vieillot, Nottv. Did. viii. p. 318 (1817. — ex Levaillant, Couroucous, pi. 8. — 

 " Guyane, Surinam et a la Trinite "). 



No. 1020. c? ad., Humaytha, 31. vii. 06. " Iris dark brown, feet grey, bill 

 yellowish green."— Wing 109i mm. 



Differs from a large number of males by the coppery golden instead of bronze- 

 green central tail-feathers. 



161. Urospatha martii martii (Spix). 



Prionitcs martii Spix, Ar. Bras. i. p. 04. tab. lx. (1824. — "in sylvis Parae " ; cf. my revision of 



Spix' types, p. Gil). 

 Momotus martii Pelzeln, Zur Ornith. Bras. i. 1867. p. 19 (Borba). 



No. 1411. ? ad., Borba, 27. xi. 06. "Iris dark red, feet and bill black."— 

 Wing 150 ; tail 206 ; bill 44^ mm. 



Differs from a series of skins from the Rio Napo, Eastern Ecuador, in having 

 the upper back not pure green, but slightly suffused with ochreous. The material 

 in the Tring Museum fully bears out what I said (I.e.) about the differences between 

 U. m. martii and U. m. scmirufa (Scl.). 



The ? from Humaytha, three <$ <$ and one ? from Coca on the Rio Napo, 

 and an adult male from La Merced, Chauehamayo, Central Peru, have the tail 

 mainly green, and the central rectrices not spatulated; while in a large series of 

 U. m. scmirufa from Bogota collections, Western Ecuador, Costa Rica, etc., the 

 tail-feathers are nearly uniform blue, and the middle pair invariably spatulated 

 in the adults. Even young birds (without the rakets) of the western form can 

 always be recognized by their blue tail. — Cf. also Berlepsch, Journ. f. Ornith. 

 1889. p. 308. 



162. 'Prionirhynchus platyrhynchus pyrrholaemus Berl. & Stolzin. 



[Momotus Platyrhynchus Leadbeater, Trans. Linn. Soc. xvi. p. 02 (1833. — "Brazil." — errore !).] 

 Prionirhynchus platyrhynchus pyrrholaemus Berlepsch & Stolzmann, P. Z. S. Lund. 1902. vol. ii. 

 Part i. p. 35 (Oct. 1902.— La Merced, Central Peru). 



No. 1225. cJ ad., Humaytha, 12. ix. 00. "Iris dark brown, feet and bill 

 black.''— Wing 114; tail 198 ; bill 37 mm. 



Count Berlepsch and Dr. Stolzmann (I.e.) jwinted out that specimens from 

 Peru (Borgona, La Merced) and Bolivia differed from the Central American ones by 

 having the central rectrices not spatulated, and the series in the Tring Museum 

 clearly proves the constancy of this character. We have the following examples : 

 1 cf, 1 ?, La Merced, Central Peru, Schunke coll.; 1 S , Chanchamayo, Central Pern, 

 Schuuke coll. ; i , Suuo, Rio Napo, ? , Coca, Kio Napo, Eastern Ecuador, Goodfellow 

 and Hamilton coll. ; and the male sent from Humaytha by Mr. Hoffmanns : none of 

 which has the middle pair of the tail-feathers ebarbed ; whereas in fourteen adults 

 from Western Ecuador (Uualea, S. Domingo, Paramba, etc.), Rio Dagua (Colombia), 

 Panama, Chiriqui, and Costa Rica they are always spatulated. 



The other character mentioned by Berlepsch and Stolzmann, however, is 

 apparently not constant, for all our six specimens of P. p. pyrrholaemus have 

 the chin yellowish green or bluish green, as in the western forms. 



As shown by Dr. Hartert,* the original locality, " Brazil," assigned to 



* Nov. Zool. viii. 18'JS, pp. i;i7— J'.is. 



