254 



pi. 81 ; Gray, Gen. p. 68 ; List of Sp. in B.M. ii. ph 1, p. 40 ; Less. 

 Uescr. &c. p. 266 ; Bp. Consp. Vol. Anisod. p. 7. 



Prionites mexicanus, Bp. Consp. p. 165. 



Momotus Martii, Jard. & Selby, 111. Orn. pi. 23 (err.). 



Viridis, supra rufescentior, subtus valde albescentior : pileo et 

 cervice supra brunneo-rufs : striga pone oculos et macula pec- 

 torali nigris : macula suboculari cyanea. 

 Long, tota 12*5, alse 4*4, candae 6"5, rostri a fronte 1*15, a rictu 

 1-5. 



Hab. Southern Mexico, Golan (Delattre) ; Quicaltan (Deppe in 

 Mus. Berol.) ; Lucappa {Bates in Mus. Derb.). 



10. Momotus castaneiceps. 



Prionites castaneiceps, Gould, P. Z. S. 1854, p. 154. 



Similis M. mexicano sed major, pileo saturatiore castaneo et ma- 

 cula suboculari subobsolete alba nee cyanea. 



Hab. Guatimala, Coban (Delattre). 



Mus. Derbiano, Ac. Phil, et Bremensi. 



Besides the specimens noticed by Mr. Gould, I have seen examples 

 of this species in the Bremen Museum also from Guatimala, and in 

 the collection of the Academy of Natural Sciences of Philadelphia. 

 It appears to be probably different from the preceding. 



11. Momotus semirufus. 



Prionites Martii, Spix, Av. Bras. i. p. 64. pi. 60? ; Tsch. F. P. 

 p. 252 certe. 



Momotus semirufus, Sclater, Rev. Zool. 1853, p. 489. 

 Baryphonus semirufus, Bp. Consp. Vol. Anisodact. p. 8. 



Viridis ; capite colloque supero et corpore infra ad medium ven- 

 trem castaneo-rufis, lateribus capitis et macula pectorali nigris : 

 ventre imo crissoque cum alis extus paululum ccerulescentibus. 



Long, tota 19'5, alee 7*3, caudse 1T5, rostri a fronte 1*75. 



Hab. New Grenada, Santa Martha and Bogota : Rio Napo, 

 Ecuador (Jameson) ; Upper Peruvian Amazon, Rio Javarri {Cast, et 

 Dev.). 



Mus. Brit., Paris. 



This fine large Motmot I first saw in 1853 in the hands of MM. 

 Verreaux, who had then lately received two specimens of it from 

 their collector at S. Martha. Shortly afterwards in looking through 

 the birds of this family in the collection of the Jardin des Plantes I 

 observed three individuals of the same species, one of which was 

 labelled 'Bogota,' and another as having been collected by MM. Ca- 

 stelnau and Deville on the Rio Javarri. I at that time considered 

 the bird as without doubt unnamed, and described it accordingly in 

 Guerin's ' Revue et Magazin de Zoologie.' But about a year after- 

 wards, in looking through Tschudi's types at Neuchatel, I was sur- 

 prised to find a specimen of this bird labeled 'P. Martii, Spix,' as 

 that name has been generally thought to apply to the M. platyrhyn- 



