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Dec. 11th, 1855. 

 Dr. Gray, F.R.S., in the Chair. 



The following papers were read : — 



1. Characters of Two New Species of Tanagers. 



By Philip Lutley Sclater, M.A. 



(Aves, PI. CX.) 



1. DUBUSIA AURICRISSA. 



Dubusia cyanocephala 1 Sclater, P. Z. S. 1855, p. 15/. 



D. supra flavescenti-olivaceo-viridis : capite nuchaque cceruleis: loris 

 nigris : subtus ccerulescenti-cinerea : tectricibus subalaribus et 

 ventre imo crissaque cum tibiis vivide aureo-Jlavis. 



Long, tota 65, alse 3 6, caudse 3*0. 



Hab. in Nova Grenada, Bogota. 



Obs. Species D. cyanocephalts simillima, sed rostro minore, colore 

 dorsi flavescentiore olivaceo, capitis cseruleo magis extenso, ventre 

 cserulescenti- neque albescenti-cinereo, et tectricibus subularibus nec- 

 non ventre imo crissoque cum tibiis vivide aureoflavis. 



Since compiling the list of Bogota birds, in which I have included 

 this species under the name Dubusia cyanocephala ?, I have examined 

 D'Orbigny's types of that bird in the Paris Museum, and find them 

 so different from the present as to lead me to conclude that they are 

 specifically distinct. 



The present bird — which must be considered as the representative 

 of D. cyanocephala in the mountain ranges of New Grenada — is com- 

 mon in collections from Bogota. The British Museum contains ex- 

 amples of both the species. Those of D. cyanocephala were procured 

 by Mr. Bridges in Bolivia. 



2. Iridornis porphyrocephala. (PI. CX.) 



Tanagra analis, Tschudi in Mus. Berolinensi. 



/. supra purpurea, dorso imo et marginibus alarum et caudce virides- 

 centibus : fronte, loris, mento summo et regione auriculari nigris : 

 gutture late et late aureo-flavo : pectore summo purpurascente ; 

 ventre viridescente, medialiter rufescenti-ochraceo : ano intense 

 ferruginescenti-castaneo : tectricibus alarum inferioribus virides- 

 centibus : rostro superiore nigro, inferiore albo. 

 Long, tota 5-6, alse 3 - 0, caudse 2*2. 

 Hab. in Nova Grenada et rep. Equatoriana. 



Obs. Affinis Iridornithi anali, sed capite dorsoque summo purpu- 

 ras, pectore purpurascente et ventre viridescente facile distinguenda. 

 When at Berlin in 1854 I first noticed a specimen of this Tanager, 

 which is in the Museum there under the name " Tanagra analis, 

 Tschudi." But. having just before that had the opportunity of ex- 

 amining type specimens of the latter bird in the collections of 

 Bruxelles and Bremen, I saw at once that the present was to all 



