1895.} A^yATOMT OF CRYPTOPEOCTA FEROX. 435 



side of the brain, however, this fissure is oulv just indicated, the 

 second of the two referred to being much the most prominent. 

 In Cynictis the fissure in question is present and looks very hke a 

 Sylvian fissure ; so also in Viverrieula. Xo doubt this is some 

 reason for placing the three genera near to each other. The brain 

 of Herpestes pulverulentus also offers some support to the veiw that 

 the fissure h is the Sylvian fissure ; for in this species (and in other 

 species, accorcHugto Mivart) the anterior limb of the Sylvian fissure 

 is divided as in the Cats. There is therefore no antecedent 

 improbability in this being the case with Cryptoproda. 



§ Muscles of the Limbs. 



In studying the muscular auatomy of Cryptoprocta, I have used 

 for comparison Genetta pardina, besides the work by Dr. Mivart 

 upon the Cat and his memoir upon the Ailuroidea. Where the 

 Cryptoprocta diverges in the characters of its muscular system from 

 Felis it approaches, or is identical with, the Viverridce, as will be 

 gathered from the following notes upon the principal muscles of the 

 limbs. 



Of the muscles of the fore Umb I only noticed that two were 

 different from those of Genetta pardina. In the latter the latis- 

 simus dorsi is peculiar, in that it gives off a thin branch from near 

 where its origin encroaches upon that of pectorahs major, which 

 is inserted on to the head of the humerus close to the origin of the 

 biceps. Just before the origin of the dorso-epitrochlear a wide 

 sHp is given off to pectorahs major. This latter seems to corre- 

 spond to the blending " with adjacent fibres of the fourth part of 

 the pectorahs " described by Dr. Mivart in the Cat. 



These additional shps are not present in Cryptoprocta, which, like 

 the Civets, has but one dorso-epitrochlear. 



The other difference concerns the extensor minimi digiti. I found 

 that this muscle in the Cryptoprocta supplied digits iii.,iv.,and v., the 

 slip to v. being for a long way up a separate muscle. In Genetta 

 pardina it only supplied iv. and v. But the distribution of the 

 tendons of this muscle is evidently variable ; for while Dr. ]Mivart 

 found that in the specimen of Genetta tigrina dissected by himself 

 the muscle gave off tendons to all three digits, he quotes Cuvier to 

 the effect that in " the Genet " only iv. and v. receive tendons. 



The hiceps has but one head, as is the rule with these Carnivora. 



The teres major is inserted distinctly in common with the 

 latissimus. 



The tnceps appeared to me to be rather four-headed, as in 

 Viverra civetta, than five-headed, as in the G-enet. 



The flexor sublimis gives off a tendon to the flexor ptt'ofurtdus. 

 It supphes the three middle digits only. 



Hhe flexor profundus has four rather than five bellies; five if 

 the connection with the flexor subhmis be counted. 



The extensor secundi internodii pollicis supphes digits i. and ii. 



28* 



