255 



chits of Leadbeater — belonging to the genus Prionirhynchus. Now 

 upon referring again to Spix's figure and description, I think that he 

 is as likely to have intended one bird as the other for his P. Marlii, 

 and it will be difficult to pronounce decisivel) r which of the two 

 ought to bear that name, until the type in the Munich Museum, if 

 still existing, be examined, and the fact ascertained whether it is a 

 specimen of Momotus semirufus or Prionirhynchus platyrhynchus. 



Div. b. Cauda rectricibus decern, et harum mediis non spatulatis. 



12. Momotus cyanogaster. 



El tutu, Azara, Pax. i. p. 243. 



Baryphonus cyanogaster, Vieill. N. D. d'N. H. xxi. 317, et Enc. 

 Meth. p. 898. 



Prionites ruficapillus, Hartl. Ind. Azar. p. 4 ; Max. Beitr. iii.1257 ; 

 Licht. Verz.' p. 21 ; Tsch. F. P. p. 251. 



Baryphonus ruficapillus, Vieill. Gal. pi. 190; Bp. Consp. Vol. 

 Anisodact. p. 8. 



Prionites tutu, Ranz. Elem. di Zool. hi. pt. 3. p. 157. 



Momotus levaillantii, Less. Man. d'Orn. ii. 104 ; Gray, Gen. 

 p. 68 ; List of Sp. in B.M. ii. pt. 1. p. 39 ; Less. Descr. d. Mamm. 

 et Ois. p. 265. 



Prionites levaillanti, Bp. Consp. p. 163. 



Le Motmot oranroux, Levaill. Prom. Supp. pi. B. 



Viridis : capitis lateribus et macula duplici pectoris nigris : pileo 

 toto et fascia lata ventrali castaneis : ventre imo ccerulescente. 



Long, tota 16 # 5, alee 5*5, caudse 9'0, rostri a fronte 1*4, a rictu 

 2-0. 



Hab. Paraguay {Azara) ; South-eastern Brazil (P. Max.); Eastern 

 Peru (Tsch.). 



The Prince Maximilian found this Motmot singly or in pairs in 

 the woods of the south-eastern provinces of Brazil. He says it was 

 generally observed sitting quietly upon a branch like a Bucco, and 

 allowing the hunter to approach without fear. Especially in the 

 morning and evening it emits its pi'olonged, soft, flute-like note, re- 

 sembling that of our European Hoopoe. Its food consists of insects. 



This bird, which is well figured by Le Vailliant in the Supplement 

 to his ' Promerops, &c.,' pi. B, is sometimes called ruficapillus ; but 

 that name is more strictly applicable to the species represented by 

 the same author in his ' Oiseaux de Paradis,' pi. 39, and of which 

 some account will be found hereafter. 



Although I have never yet had an opportunity of examining Para- 

 guay specimens of this species, there seems little doubt that Azara' s 

 " Tutu " is referable to it, and we must therefore employ Vieillot's 

 term " cyanogaster" as its first-given specific appellation, although 

 in most examples the blue tinge on the belly is but slightly apparent. 



