178 DB. B. C, A. WINDLE AND MB, P. G. PAESOJTa ON THE [IMar. 1, 



Procyonidae, and Mustelidse the muscle has, so far as we know, 

 not been observed except in Liitra cinerea (93), in which Macalister 

 describes it as feeble. 



3Iyolof/icfil Oharactenstics of the variovs Families of Camivora. 



Felid.'e. 



(1) Sterno-mastoids of opposite sides do not fuse in the mid- 



ventral line. 



(2) The omo-hyoid is never present. 



(3) The cephalo-humeral usually reaches the forearm. 



(4) The pronator radii teres is inserted into the middle of the 



radius. 



(5) The palmaris longus externus alone is present. 



(6) The pronator quadratus occupies the lower half of the radius 



and ulna. 



(7) The supinator longus is present (except in Cyncelurus). 



(8) The flexor brevis digitorum maniis is usually present. 



(9) The caudo-femoralis (agitator caudse) usually reaches the 



patella. 



(10) The ilio-tibialis (sartorius) is usually single. 



(11) The semitendinosus never has a caudal head. 



ViVEEBIDjE. 



(1) The sterno-mastoids of opposite sides seldom fuse. 



(2) The omo-hyoid is seldom present. 



(3) The rhomboideus capitis is seldom seen. 



(4) The subclavius is sometimes present. 



(5) The cephalo-humeral usually reaches the forearm. 



(6) The pi'onator radii teres is inserted into the middle of the 



radius. 



(7) There may be a palmaris longus externus, internus, or both. 



(8) The pronator quadratus is very variable. 



(9) The supinator longus is present. 



(10) The flexor brevis digitorum maniis is often present. 



(11) The caudo-femoralis is inserted into the lower third of the 



femur. 



(12) The ilio-tibialis (sartorius) may be single or double. 



(13) The semitendinosus always has a caudal head. 



liXMTSlQM. 



(1) The mylo-hyoid does not reach as far forward as the 



symphysis menti. 



(2) The omo-hyoid is usually absent. 



(3) The rhomboideus capitis is seldom present. 



(4) The cephalo-humeral is inserted into the humerus. 



(5) The pronator radii teres is inserted into the middle of the 



radius. 



