25 



come nearest to the brown-headed phase, the fuscous head being slightly edged with bluish 

 green, and the chin darker than in Bogota birds. On the Ucayali Deville obtained examples of 

 both forms ; and it does not appear from the skins in the Paris Museum on which of them his 

 G. cyanescens is based, although his description seems to indicate the brown-headed bird. 

 Farris's skins of this species, collected somewhere in the interior of Northern Peru, and 

 Whitely's examples from Cosnipata belong altogether to the green-headed form. In the latter 

 there is no trace of fuscous colour on the head, the bright metallic green commencing imme- 

 diately from the front, and the chin is but slightly blackish in the male, and fuscous in the 

 female. On the whole we may say that the two extreme forms of this species are found, as is so 

 often the case in nature, in the two extremities of its range, whilst examples from intermediate 

 localities are more or less intermediate in their characters. 



Taking one of Hauxwell's excellently made skins as a pattern, I should describe the general 

 plumage of the male of G. tomhacea as brilliant metallic green with coppery reflections in some 

 lights. The wing-feathers are black, the secondaries and wing-coverts being edged externally 

 with green like the back. The crown of the head is brown, with slight green margins to one or 

 two of the feathers. The chin is greyish white. The green colour of the upper surface is 

 continued below halfway down the belly, the lower half of which, together with the sides, under 

 wing-coverts, and lateral tail-feathers, is of a deep chestnut-red. The four middle tail-feathers 

 are green like the back above, and dark green below, with a small blotch on the inner web of 

 the base of the submedian pair. The third pair are wholly chestnut. The fourth and fifth 

 pairs are also chestnut, but have an elongated green patch along the outer web towai'ds their 

 extremities. The diminutive external pair seem to be wholly chestnut-red. In the female the 

 belly is much paler and more yellowish in tinge. In both sexes the bill is black, and the legs 

 brown (in the dried skins) with black claws. 



The following is a list of the examples of this Jacamar in my own collection and that of 

 Messrs. Salvin and Godman, arranged geographically: — 



No. 



Sex. 



Mus. 



Patria. 



Long tota, 



alse, 



caudse, 



rostri, 



1. 



6 



P. L. S. 



Bogota. 



8-0 



31 



3-5 



20 



2. 



6 



P.L. S. 



Bogota. 



7-8 



30 



3-7 



21 



3. 



6 



S.-G. 



Bogota. 



8-2 



3-2 



3-8 



20 



4. 



2 



S.-G. 



Bogota. 



7-3 



31 



3-2 



1-9 



5. 



6 



S.-G. 



Pebas {Hauxwell). 



8-5 



3-0 



3-5 



1-8 



6. 



? 



S.-G. 



Pebas [Hauxwell). 



8-0 



2-9 



3-4 



]-8 



7. 



6 



P. L. S. 



Rio Javari {Bates) . 



7-6 



3-0 



3-5 



1-8 



8. 



6 



P.L. S. 



Rio Javari {Bates). 



7-5 



30 



3-5 



1-8 



9. 



6 



P.L. S. 



Nauta {Bartlett). 



7-7 



3-2 



3-4 



20 



10. 



6 



P. L. S. 



E. Peru {Farris). 



90 



3-2 



3-6 



2-2 



11. 



6 



S.-G. 



E. Peru {Farris). 



8-5 



3-2 



3-8 



20 



12. 



6 



S.-G. 



Cosnii^ata {Whitebj). 



8-5 



3-2 



3-8 



21 



13. 



s 



S.-G. 



Cosnipata {Whitely). 



8-3 



31 



3-5 



2-0 



Of these, Nos. 1 to 6 belong strictly to the brown-headed form with whitish chin, Nos. 7 



and 8 are intermediate in characters, and the others belong to the green-headed race with 

 blackish chin. The examples figured are Nos. 7 and 13. 



ScL. Jac. & Puffb. No. lY.— October, 1879. ' E ' 



