rare Amazonian Jfainmals. I'M 



c? . 12. Tamuciirj, same region, 2 houis distant by 

 canoe. 



0. remulus was described in 1908 on a specimen from 

 tSantarem preseTited in 1870 by ^Ir. Wickiiam. The present 

 exact record ot" the occurrence of tlie species is of value, as 

 iSantarem might liave been merely the place to which the 

 type had been brought from elsewhere. Now, however, it is 

 clear that the species occupies the area between the Amazon, 

 Xingu, and Tap;ijoz, at the north-western corner of which 

 Santarem is situated. 



The new specimens agree with the type in all essential 

 respects. 



2. Callimico goeldii, Thos. 



? . Para Zoological Gardens. Type of Callimico sneth- 

 la(/eri, Kibeiro. 



In the ' Brasiliauische Rundschau' for December 1911, p. 21, 

 Dr. A. de Miranda liibeiro, of Rio Janeiro, described a new 

 genus and species of monkey, Callimico snethlageri^ whicii 

 lie stated to be " intermediate between Callicehus and Mico,''^ 

 on a specimen then living in the Para Zoological Gardens. 

 This specimen has since died and has been sent over for 

 examination. 



At the first glance it is evident that, as to the species, it is 

 identical with my " Midas goeldii ^^ described in 1904- * on a 

 specimen which had also been kept alive in the Para Gardens, 

 but of which the skull had unfortunately been mislaid, my 

 reference of the species to the genus Midas being avowedly 

 provisional. 



Dr. Ribeiro formed his genus Callimico purely on the 

 external characters, which, wliatever they may have appeared 

 on the living animal, are by no means very striking on the 

 skin ; and it has therefore been with much interest that I 

 have examined the skull of the present specimen. 



This proves to be of extraordinary interest, for it seems to 

 show that Callimico is really intermediate between the two 

 great Neotropical families Cebidee and Callitrichidas, as 

 suggested by Dr. Ribeiro. 



Externally the animal is like a marmoset, having similarly 

 long, curved, compressed claws and doubtfully opposable 

 pollex. It should, however, be noticed that the "na.is'' of 

 many Cebidae, notably of Saimiri, are as compressed as in 

 the marmosets, the only difference being in their length. 

 On the other hand, the skull is provided with six cheek- 



♦ Ann. t<t Mag. Nat. Hist. (7; xiv. p. 189 (1904). 



9* 



