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Show 1880.] MR. O. THOMAS ON MAMMALS FROM ECUADOR. 395 7. CHRYSOTHRIX SCIUREA, Linn. Seven specimens, Copataza river. Of the four adult specimens of this species, two are males and two females. The males are of the normal coloration ; but the females both have a distinct black line along the side of the crown, above each ear, and extending in front down the side of the face nearly to a level with the angle of the mouth; and in one of them the two lines are connected across the neck by a third. This agrees very well with the description of C. lunulata, Geoffr.1 (C. niyrivittata, Wagn.2), a species founded entirely on specimens with similar black lines. Dr. Gemminger, of the Munich Academy, has most kindly examined for me the types of Wagner's C. niyrivittata ; and he tells me that the series consists of two males and a female; so that these lines are not attributable to sexual difference, as I at first suspected. Dr. Gemminger at the same time states his opinion that C. sciurea, C. nigrivittata, and C. entomophaga form but one variable species. I am informed by Mr. Buckley that all his specimens were collected at the same place, and that the Indians consider them to be of the same species, and think the black lines to be merely a sign of old age. Without further material I do not venture to give a decided opinion as to the validity of C. lunulata as a species ; but it certainly is suspicious that the localities from which it has been recorded are not close together, but are scattered over the wide range of C. sciurea. 8. MIDAS ILLIGERI, Puch. Twenty-one specimens, Copataza river. All these specimens agree in having the fur across the shoulders and loins of a rich reddish chestnut-colour, thus differing from the next species, which has the hair on the same parts annulated with black and yellow. 9. MIDAS NIGRIFRONS, Geoffr. Six specimens, Copataza river. 10. HAPALE PYGMCEA, Spix. Six specimens, Copataza river. 11. THYROPTERA TRICOLOR, Spix. One specimen, Sarayacu. 12. MOLOSSUS ABRASUS, Temm. One specimen, Sarayacu. 13. PHYLLOSTOMA HASTATUM, Pall. Two specimens, Sarayacu. 14. CAROLLIA BREVICAUDA, Wied. Three specimens, Sarayacu. 1 Archiv. Mus. iv. p. 18, 1844. " Abb. Munch. Akad. v. p. 461. |