60 



examples of it in the collection of Messrs. Salvin and Godman sent by Arce from Chepo, near 

 Panama, and from Veragua. 



Jacamerops appears to be what is called a monotypic form, consisting of only one species. 

 In 1849 M. Deville described what he believed to be a second species of this genus from a 

 specimen Avhich he had procured at Pebas, on the Amazons, under the name Jacamerops isidorei ; 

 and the example was subsequently figured under the same title in the atlas of the voyage of 

 Castelnau and Deville. I have on several occasions examined the type of this supposed species 

 in the Paris Museum, and have come to the conclusion that it is merely a melanoid variety of 

 /. grandis, the green of the back having passed into a dark purplish colour. In every other 

 respect the so-called J. isidorei resembles /. grandis, which is likewise abundant in the same 

 district. 



Jacamerops grandis is so well-marked a form, and so different from all other members of the 

 group, that a second lengthened description of it seems hardly necessary. But I give in the 

 subjoined list the dimensions of the ten specimens in my colleciion and that of Messrs. Salvin 

 and Godman. 



Patria. Long, tota, alse, cauJse, rostri. 



'Barra [Wallace) . 10-8 4-5 5-0 21 



S'--' Cruz, Upp. Amaz. [Bartlett). 10-9 4-3 5-0 2-0 



Napo, Ecuador (iJi<cA'%) . 11-5 4-5 5-4 2-2 



Napo, Ecuador (5mc^%). 10-8 4-4 5-0 2-0 



Bogota. 10-3 4-6 5-3 2-0 



Remedios, Antioquia {Salmon). 11*8 4'4 5'4 21 



7 annma [M'^Leann an). H'O 4-4 5-3 2-0 



Panama [M'Leannan). ll'O 4-2 5-1 1-11 



Chepo, Panama -(^rce) lO'o 4-2 5-5 2-0 



Veragua [Arce). lO'O 4-5 5-1 1-11 



The figures (Plate XVIII.) are taken from Nos. 1 and 2. 



^0. 



Sex. 



llus. 



1. 



$ 



p. L. S. 



2. 



6 



P. L. S. 



3. 



6 



S.-G. 



4. 



2 



S.-G. 



5. 



cT 



P. L. S. 



6. 



c? 



S.-G. 



7. 



c? 



S.-G. 



8. 



2 



S.-G. 



9. 



6 



S.-G. 



LO. 



2 



S.-G. 



