238 Mr. Gould on a new species of Toucan. 



prises by far the most splendid members of the family. I pro- 

 pose to name it 



Trogon (Calurus) auriceps. 



Trog. capite toto et gutture splendide aureo-viridibus ; corpore su- 



periore, pectore superiore, alis, tectricibusque caudpe superioribus 



saturate viridibus ; Cauda nigerrima ; pectore inferiore, abdomine 



crissoque e sanguineo coccineis. 



Male. The whole of the head and throat rich golden green ; all 

 the upper surface, chest, wing and upper tail-coverts rich deep green, 

 changing into a brilliant golden according to the direction of the 

 light ; wings and all the tail-feathers jet-black ; breast, abdomen and 

 under tail-coverts of the richest scarlet, inclining to crimson ; feathers 

 of the tarsi black ; bill yellow ; feet reddish brown. 



Female or young Male. Head, throat, chest and upper surfaces 

 as in the male, but less ; wings black, the primaries and secondaries 

 broadly margined on their external webs with sandy buff ; tail dull 

 black, the outer feather irregularly margined externally and tipped 

 with pale buff ; abdomen and under tail-coverts scarlet ; bill brown ; 

 feet reddish brown. 



Total length, 14^ inches ; bill, 11 ; wing, 8 ; tail, 8 ; tarsi, f . 



Hab. The Cordillerian Andes. 



This noble bird is more nearly allied to Trogon {Calurus) 

 pavoninus than to any other species ; but from which it dilFers 

 in the bright yellow colouring of the bill, in the greater length 

 of the wing-coverts, and in the more jet-black colouring of the 

 wings and tail-feathers ; the present is also a larger bird than 

 pavoninus. 



The Toucan belongs to that section of the family of Ram- 

 phastid(S for which I have proposed the generic or subgeneric 

 name of Aulacorhynchus, and may be termed 



Pteroglossus (Aulacorhynchus) castaneorhynchus. 



Pt. rostro castaneo-rubro, apicem versus pallidiore ; mandibula infe- 

 riore in medio, et culmine nisi ad basin nigro undulatis ; vitta ba- 

 sali straminea, angusta apud nares, exinde per latera rostri ducta, 

 et latiore gradatim ; corpore superiore fuscescenti-viridi ; alis 

 saturate viridibus ; uropygio coccineo ; corpore subtiis viridi ; la- 

 teribus cseruleo tinctis ; caudse rectricibus quatuor intermediis ad 

 apicem late castaneis. 



Bill chestnut-red, becoming paler towards the point, clouded with 

 black on the middle of the lower mandible and along the culmen, 

 except at the base ; at the base of the bill is a band of straw-white 

 which increases in breadth as it proceeds downwards ; crown of the 

 head and upper surface brownish green ; wings dark green ; rumji 

 crimson ; four middle tail-feathers deep bluish green, largely tipped 

 with chestnut-brown, the remainder green ; all the under surface 

 green, stained on the Hanks with light blue. 



