1888.] NATURAL SCIENCES OF PHILADELPHIA. 149 



fuse like the other with the inferior surface of the sublimis tendons 

 of the 3rd and 4th digits. I have called the present muscle flexor 

 sublimis because of the direct continuance of its tendons into the 

 digits, the small accessory tendons seeming merely to insert upon the 

 under surface of the broader tendons of the large muscle. In the 

 cat, on the other hand, it is the accessory tendons which have a di- 

 rect connection with the phalanges, and the tendons of the long con- 

 dylar muscle, relatively more delicate and more intimately blended 

 with the palmar fascia than in the bear, appear to insert upon the 

 surface of the perforatus sheaths formed by the " accessory " mus- 

 cles. Mivart hence calls the long muscle "palmaris longus, " but 

 in the numerous and often reciprocal variations existing in the 

 palmaris longus, flexor sublimis and accessory flexor sublimis 

 throughout the mammalian series, questions of homology would ap- 

 pear to be very uncertain. 



Lumhricales four in number with their usual relations. 

 Sujnnator longus rises by two heads, one from the supinator ridge 

 immediately above the extensor carpi radialis, and the other, which 

 can be traced more than two-thirds of the way up the humerus, from 

 out the substance of the brachialis anticus. The two unite before 

 reaching the elbow, and the resultant belly runs down the fore-arm 

 as a ribbon about 2 in. wide, to insert by fascia on the lower end of 

 the radius. 



Supinator brevis reaches to within H in. of the distal end of the 

 radius. 



Extensor commimis digitorum and extensor minimi digiti as in the 

 cat or black bear. 



Extensor indicis fused with ex. secundi inter nodii pollicis. 

 Hand. According to the " typical arrangement " of intrinsic 

 nmscles, so admirably presented by Cunningham, the elements in 

 the hand are as follows : 



In the right hand the palmar layer consisted of adductor jjollicis, 

 |in. wide, adductor indicis, I in., ad. annularis, i in., and ad. minimus, 

 I in. The adductor annularis was a very delicate slip and did not 

 appear in the left hand. Adductor minimus divides before reaching 

 the base of its digit into three portions, of which only one inserts into 

 the digit ; of the other two, the more radial ends in a long tendon, 

 which runs toward the end of the digit to insert into the extensor 

 tendon, and the ulnar turns directly backwards and inserts fleshily, 

 also into the extensor system, opposite the end of the metacarpal. 



