254 



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

 Descr. &c. p. 2C6 ; 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-rujis : striga pone oculos et macula pec- 

 torali nigris : macula suboculari cyanea. 

 Long. totą 12*5, alae 4*4, caudse 6'5, rostri a fronte 1*15, a rietu 

 1-5. 



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

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



10. Momotus castaneiceps. 



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



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

 cula suboculari subobsolete alba nec cyanea. 



Hab. Guatimala, Coban {Belattre). 



Mus. Derbiano, Ac. Phil. et Bremensi. 



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

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

 the coUection of the Academy of Natūrai Sciences of Philadelphia. 

 It appears to be probably different from the precediug. 



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 colloųue supero et corpore infra ad ?nedium ven- 

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

 ventre itno crissoųue cum alis extus paidulum ccerulescentibus. 



Long. totą 19'5, alae 7'3, caudse ITS, rostri a fronte 175. 



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 collectiou of the Jardin des Plantes I 

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

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

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

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

 Gueriu'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. platyrkyn- 



