168 Mr. E. Bartlett on a new Species ofGuiraca. 



Plate VI. 



Fig. 1. Streptaxis mamboiensis. 



Fiffs, 2, 2 a. Streptaxis urdinarius. 



Fig. 3. Gihhus {Gonidontus) breviculus. 



Fig. 4. Ennea Hanningtoni. 



Fig. 5. Ennea Newtoni. 



Fig. 6. Ennea fortidentata. 



Fig. 7. Ennea consangimiea. 



Fig. 8. Ennea ctcrvilamella. 



Fig. 9. Ennea consociata. 



Fig. 10. Ennea cequidentata. 



Fig. 11. Ennea cenigmatica. 



Fig. 12. Ennea soror. 



Fig. 13. Ennea suhhyalina. 



Fig. 14. Ennea sub/lavesccns. 



Fig. 15. Ennea andcfa. 



Fig. 16. Ennea lendix. 



Fig. 17. Ennea microstoma. 



Fig. 18. Ennea peculiaris. 



XVIII. — On a new Species o/Guiraca. By Edward 

 Bartlett, Curator of the Maidstone Museum. 



While closely comparing my specimens of this genus I 

 observed a great difference in the bills and in the general 

 colour of the birds obtained by Mr, II. Whitely on the 

 Carimang River, British Guiana, which I think are sufficient 

 to separate them from the well-known Ouiraca cyanea, auct. 

 The bill of Guiraca cyanea is short, robust, and much 

 curved on the culmen ; the lower belly is greyish blue; under 

 tail- coverts blue, like the breast. 



Guiraca RoihscJiildu, sp. n. 



Bill similar to Guiraca cyanoides^ straight, acute ; culmen 

 not curved as in Guiraca cyanea^ length of culmen 0"75. 



Male. — General colour similar to Guiraca cyanea, the 

 silvery blue of forehead and spot of same on cheek brighter 

 and more extended ; upper and lower parts darker blue than 

 in the old form ; rump uniform with the mantle; belly nearly 

 black ; under tail-coverts blackish, faintly tinged with dark 

 blue. 



Female. — Dark umber-brown, palest on the forehead and 

 chin. Much darker than the female of Guiraca cyanea. 



This well-marked species by its size, colour, and straight 

 culmen cannot be confused with either Guiraca cyanea or 



I 



