190 Mr, A. Newton on the Possibility 



rescente : vitta lata cervicali antica aurantia : pectore pallide 

 sulphureo : ventre flavo et viridi flammulato : long, tota 5'0, 

 alse 2'7, caudse 1'8. 



Hab. Interior of New Granada and Rio Napo. 



Mus. Brit., P.L.S. 



11. Capito melanotis. 



" Eubucco hartlaubi, ? aut juv.," Sclater, P.Z.S. 1857, p. 267. 

 Capito melanotis, Hartlaub, in Mus. Bremensi. 



Viridis : loris et regione auriculari nigris : superciliis post oculum 

 aurescentibus : subtus viridis, gutture grisescente, mento 

 albo : vitta cervicali antica sulpliurea : ventre flavo et viridi 

 flammulato : crass, spec, prsec. 



Hab. New Granada, Rio Napo, and Peruvian Amazon ; Ucayali 

 [Hawxwell) ; Rio Javarri {Bates) . 



Mus. Brit., Bremensi, P.L.S. 



I am still not cei-tain as to whether this bird is really distinct 

 from C. hartlaubi. It difiers from that species in the green cap, 

 which has, however, an aurescent tinge, in the black (not blue) 

 sides of the head, which are bordered behind by a golden post- 

 superciliary mark, and in the yellow (not orange) throat-band. I 

 have not yet met with intermediate forms, and am rather disposed, 

 at present, to agree with Dr. Hartlaub in making it specifically 

 different. I should remark, however, that both Mr. HawxwelFs 

 specimens in the British Museum are marked " female." 



12. Capito glaucogularis. 



Capito glaucogularis, Tsch. Av. Consp. inWiegm. Archiv, 1844, 

 p. 301, et Faun. Per. p. 259. pi. 24. fig. 2. 



Eubucco glaucogularis, Sclater, P. Z. S. 1857, p. 268. 



Viridis : facie et gutture cseruleis : loris nigris : vitta antica cervi- 

 cali ruberrima : abdomine viridi : ventre flavo et viridi flam- 

 mulato : crass, spec, prsec. 



Hab. Eastern Peru {Tsch.). 



Mus. Bremensi. 



XX. — On the Possibility of taking an Ornithological Census. 



By Alfred Newton, M.A., F.L.S. 



To attempt the taking of an Ornithological Census of these islands 



was a favourite idea of Mr. John Wolley's ; so much so, indeed, 



that I believe he used to regard its accomplishment as the chief 



