138 
sia torquata (Bull. Ac. Se. Brux. xxii. no. 2. Feb. 1855). But I 
maintain my opinion that it is a typical Daenis, though I allow that 
it is difficult to separate certain species of that genus from the true 
Nemosie. 
51. Dacnis LEucoGENys, Lafr., Rev. et Mag. de Zool. 1852, 
p- 470. 
The British Museum have lately acquired a skin of this bird, 
which I omitted to include in my list of the genus given at p. 252 of 
the ‘ Proceedings’ for last year. It forms a tenth species of this 
beautiful group, and must be placed next to D. speciosa. 
52. CONTROSTRUM ALBIFRONS, Lafr., R. Z. 1842, p. 301, et Mag. 
de Zool. 1843, Ois. t. 35 (¢ adultus); C. atrocyaneum, Lafr. R, Z. 
1848, p. 9 (¢ juv.), et C. ceruleifrons, Lafr. R. Z. 1842, p. 302 (9). 
I cannot but regard these three names as applicable to one species. 
The white-headed bird appears to be the adult, and the blue-headed 
the young male. I have examples of transition between these two. 
The ceruleifrons seems the female. I have also what I consider a 
still more immaturely plumaged bird of this species: Olivaceum ; 
subtus flavescens ; alis caudaque fuscis. 
53. ContRostTRUM siTTICOLoR, Lafr. R. Z. 1840, p. 102. 
54. ConrrostruM RuFuM, Lafr. Mag. de Zool. 1842. Dacnis 
rufo-cinerea, Bp. Att. Sc. It. vi. p. 404, et Consp. p. 401. 
55. CERTHIOLA LUTEOLA, Cab. M. H. p. 97. sp. 533. 
Trinidad and Bogota specimens of this species agree with each 
other, and with Dr. Cabanis’ description. 
56. Dietossa simiuis, Lafr. R. Z. 1846, p. 318. 
57. Diciossa arerriMA, Lafr. R. Z. 1846, p. 319. 
58. Diciossa personaTa (Fraser.), P. Z.S. 1840, p. 22. (Feb. 
25th.) Uncirostrum cyaneum, Lafr. R. Z. 1840, p. 102. (April Ist.) 
59. DieLossa LAFRESNAYII (Boiss.), R. Z.1840, p.5. <Agrilo- 
rhinus bonapartei, Fraser, P. Z. 8. 1840, p. 22. 
60. Dictossa HUMERALIS (Fraser), P. Z.S. 1840, p.22; Cab. 
M. H. p. 27 (note). 
I am rather doubtful whether these two last birds and Cabanis’ 
intermedia (M. H. p. 27) are all valid species. 
61. DigLossa ALBILATERALIS, Lafr. R. Z. 1843, p. 99, et 1846, 
p- 316. 
62. Diciossa p’orBIGNnt (Boiss.), R. Z. 1840, p. 5. 
Probably a female. Bogota seems the head-quarters of this pecu- 
liar genus. One is found in Central America and South Mexico, one 
in the highlands of British Guiana, three in Bolivia, and one (accord- 
