500 Mr. 0. Thomas on 



LVI. — On MammaJs collected in Ceard, N.E. Brazil, hij 

 Fraulein Dr. Snethlage. By Oldfield Thomas. 



(Published by permission of the Trustees of the British Museum.) 



I OWE to the kindness of Fraulein Dr. E. Snethlage, 

 Director of the Goeldi Museum, Para, the opportunity of 

 working out a number of small mammals collected by her in 

 Ceara, a district as yet almost untouched by collectors. 

 Thirteen species are represented, of which two are new. 



The localities where Fraulein Snethlage worked were 

 two : — (1) Ibu, a ^' cidade " in the north of Ceara, the last 

 station on the Sobral railway, situated at an altitude of about 

 300 metres, at the foot of the Serra de Ibiapaba, which rises 

 inunediately west of it. 



(2) S. Paulo, on the top of the Serra, at about 900 metres. 

 The Serra is a hioh sandstone plateau with a steep margin 

 on the Ceara side ; it is said to extend far into Piauhy. 



A series of duplicates, and tiie types of the two new 

 species, have been presented to the British Museum by the 

 authorities of the Goeldi Museum. 



1. CalUthrix j cchus, L. 



(?. 5, 13; ? . 1, 2, 3 (juv.), 6, 7, 8, 14. Ipu, Ceara. 



The coloration of the nape in these marmusets is very 

 variable, some being grey and others whitish. The latter 

 represent Spix's alhicollis. 



2. Artibeus Jamaicensis liluratus^ 111. 

 (J . 26. S. Paulo, Serra de Ibiapaba. 



3. Vampyrops lineatus, Geoff. 



(J. 30, 31. S. Paulo, Serra de Ipiapaba. 

 J. 60, 03 j ? . 61, 62. Ipu. 



4. Hemiderma perspicillatum, L. 

 ? . 56. S. Paulo, Serra de Ibiapaba. 



5. Ilolochilus sciureus, Wagn. 

 cJ . 54. S. Paulo, Serra de Ibiapaba. 



