Monkeys found in Italy. 161 



In Germany, two or three species, belonging to at least 

 two genera : Dryointhecus Fontani (genus extinct), Colobus? 

 grandceviis. 



In France, four species, belonging to four different genera, 

 two of which are extinct : PUopithecus antiquus^ Dryojnthecus 

 Fontani., Semnojpithecus monspessulamis, Macacus ])tiscus. 



In Switzerland, two species, belonging to two extinct 

 genera : Ccenopithecus lemuroides, Pliopithecus platyodon. 



In England, one species of a living genus : Macacus plio- 

 ccenus. 



The Eocene deposits have hitherto furnished a single species 

 of which the determination appears to be certain, the Miocene 

 nine or ten, the Pliocene two, and the Post/pliocene a single one, 

 leaving out of consideration the fossils buried in the caverns 

 of Brazil, which probably also belong to the Postpliocene. 



Fossil Monkeys discovered in Italy. — Until quite recently 

 fossil monkeys were unknown in the different fossiliferous for- 

 mations of Italy. The specimen which I lay before the 

 Society belongs to the palseontological collection of the Civic 

 Museum of Milan (Cat. no. 849). Derived from a private 

 collection, this fossil was sent to the Marquis C. Ermes- 

 Visconti, who presented it to the Museum. Prof. Cornalia, 

 Director of the Museum, has been kind enough to allow me 

 to examine it ; and I take advantage of this opportunity to 

 express my thanks to him for this. Unfortunately the exact 

 derivation of this interesting specimen is unknown ; the ticket 

 which accompanied it was inscribed " Val d'Arno inferiore." 

 Inquiries made to ascertain its origin were without result; 

 nevertheless, for various reasons, it is more probable that the 

 fossil is derived from the upper Val d'Arno. We shall have 

 to recur to the reasons which lead me to accept this suppo- 

 sition ; I shall only remark here that fossils of terrestrial Mam- 

 malia are rare in what is called the lower Val d'Arno. 



The specimen in question, which is imbedded in a kind of 

 greenish and very soft marly grit, consists of a fragment of a 

 right upper jaw containing the three true molars in position. 

 Of the premolars there is no other trace than three alveoli, 

 which, judging from their respective situations, belonged to 

 the two outer roots of the last premolar and to the postero- 

 external root of the first ; in the middle alveolus there is a 

 small fragment of the root. The enamel of these molars is of 

 a greenish-grey colour, which in the neighbourhood of the 

 roots acquires a darker and bluish tint. 



I will not take up the time of the Society by repeating the 

 detailed description, which I give in the memoir of which the 

 present communication is only a summary. I shall content 



