118 



I should be inclined to restrict it, excluding fi'om it the Grivet and 

 Green Monkeys, and modify its characters accordingly, taking the 

 Sooty and White-eyelid Monkeys as its typical examples, a plan 

 which, it appears to me, is preferable to the creation of a new ge- 

 neric title, which often leads to confusion." 



Mr. Owen exhibited a preparation of the ligamentum teres in the 

 Coypou, which he had received from Mr. Otley of Exeter, and read 

 the following extract in a letter from that gentleman : — 



" I have enclosed with this the thigh bone, and the scapula, 

 clavicle, and humerus of a Coj'i^ou, which came into my hands after 

 having been mangled by a stuffier of animals, and which had been 

 preserved alive for some weeks by a gentleman of this place. I be- 

 lieve that not many opportunities have occurred of dissecting this 

 animal in England; and as I found a difference between the specimen 

 in question and that described by Mr. Martin, I thought the por- 

 tions I have forwarded might be interesting to you, had it not fallen 

 to you to dissect one of these animals. Mr. Martin states that the 

 thigh bone had no round ligament : you will see that there exists a 

 woU-developed one in this, as there also was on the other thigh 

 bone." 



Mr. Martin observed, that on referring to his account of the dis- 

 section of this animal, it will be found, that he is so far from assert- 

 ing it as a fact, positively determined, that the ligamentum teres is 

 wanting, that, after giving an account of the state of the acetabulum 

 and head of thigh bones as he found them, he adds, " it would be 

 desirable that another specimen should be examined before this pe- 

 culiarity (viz. the absence of a ligamentum feres) is insisted on as an 

 ascertained fact." See Zool. Proc. 1835, p. 182. 



