BY THE BARON DE LA FRESNAYE. 
est analogy in the colouring and dimensions with the Scytalopus 
Fuscus, nevertheless it appears to us to differ, in the tail being longer, 
in its feet blackish and not pale, and in its colouring appearing black 
and not sooty black. 
12. Mer. fuscoides, Nob. (nov. spec.) ‘‘ Supra et subtis fusco- 
murinus, omnino talpe concolor, alis tantummodo fumigato-brun- 
nescentibus ; cauda mediocri, pedibus pallidis. Hab. Chili; total 
length, being stuffed, 4% in.; of the wing, 17; tail, 13.” 
Before we had seen the figure of the Seytalopus fuscus in the 
plate of Sir W. Jardine, we thought our bird identical with it; but 
since we possess this plate, we acknowledge that ours is larger, 
and that its tail, especially, is much longer. 
13. Mer. analis, Nob.; Mer, analis, Lafr. Rey. Zool..1840, p. 104. 
“ M. supra totus schistaceo-griseus, plumis uropygialibus tantum- 
modo apice et yix conspicué rufescentibus ; subtus pallidior, cineras- 
cens, pectore imo ventreque médiis, cinerascenti-albidis ; abdomine 
imo, ano et subcaudalibus rufis; pedibus pallidis, digitis polliceque 
presertim yalde elongatis cum ungulis albido flayescentibus. Long. 
tota (avis arte farcto) 5; unc. angl. ale plicate, 23; caude, 2¢ ; 
pollicis, §; digiti medii (cum ungulis) ¥. Habitat in Paraguay et 
Chili regionibus.” 
After the Mer. orthonyx, Nob., and the Mer. ater, Less., this 
species is the largest of our collection, it is a little smaller than the 
Mer. ater, and it differs principally from it, by the tail being much 
shorter, by the lower coloration paler, and by the frontal feathers 
not lengthened nor erected. 
14. Mer. senilis, Nob.; Mer. senilis, Lafr. Rev. Zool. 1840, p. 103. 
“M. totus cinereus, supra intensits, subtis pallidiis, fronte et 
aliquot ale tectricibus albis, rostro supra corneo, subtis pallide flayo ; 
pedibus sordide flayis. Long, toto (arte farcto), 5%; unc. angl. 
ale, 22; caude, 23; pollicis cum ungula, 2 ; digiti medii, 7. Habitat, 
Santa Fé de Bogota.” 
This, allied to the former species, differs specifically, by its less 
size, its uniform coloration, and its feet being dirty yellowish, not 
whitish, 
15. Mer. griseicollis, Nob. ; M. griseicollis, Lafr. Rey. Zool. 1840, 
p. 103. 
“ M. supra schistaceus, dorso imo alis caudaque fumigato-brunneis, 
pennis longis uropygialibus rufis; subtis gula, collo pectoreque 
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