1880.] MR. O. THOMAS 01>i MAMMALS FROM ECUADOR. 395 



7. Chrysothrix sciurea, Linu. 



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.' 

 (C niyrivittata, Wagn.-), a species founded entirely on specimens 

 with similar black lines. Dr. Gremminger, of the Munich Academy, 

 has most kindly examined for me the types of Wagner's C 7iigri- 

 vittata ; 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. nigi-ivittata, and C. entomophaga form 

 but one variable species. I am iuformed 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 sus- 

 picious 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, Geoifr. 

 Six specimens, Copataza river. 



10. Hapale pygm^a, 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. 



» Archiv. Mus. iv. p. 18, 1844. s Abb. Miinek Akad. v. p. 461, 



