1882. ] ANATOMY OF PROTELES. 583 
large slip which is inserted into the annular ligament of the wrist. 
In other respects it resembles that of H. crocuta. 
The extensor minimi digiti of Proteles resembles that of H. cro- 
cuta in being inserted into the ¢wo outer toes, and differs from that 
of Viverra, which gives off slips to the three outer toes. 
The extensor indicis in Proteles joins the extensor tendon which 
passes to the middle toe, and thus agrees with that of H. striata, and 
differs from that of H. crocuéa, which joins the extensor tendon of 
the second toe. In Viverra the tendon of this muscle gives off slips 
to the Ist and 2nd toes. 
The palmaris longus of Proteles resembles that of H. crocuta, and 
differs from that of H. striata, the tendon of which blends with the 
superficial flexor tendons of the toes, as also from that of Viverra, 
which is double. 
The flexor carpi ulnaris of Proteles differs from that of H. erocuta 
and H, striata in possessing an olecranoid as well as a condyloid 
origin. In this respect Proteles resembles Viverra. 
The flexor carpi radialis resembles that of H. crocuta in being 
inserted into the base of the second metacarpal bone, and differs 
from that of Viverra, which is inserted into the first as well as the 
second metacarpal. 
The flexores digitorum of Proteles closely resemble those of H. 
erocuta for the most part, but differ inasmuch as that portion of 
the common muscle which represents the flexor perforatus digitorum 
divides only into three slips, which are distributed to the three 
middle toes, while in H. erocuta it divides into four slips, which are 
distributed to the four perfect toes. In this respect Proteles agrees 
with Viverra. In Proteles, moreover, the portion of the muscle 
which represents the flexor perforans divides into five slips, one of 
which passes to each of the toes; while in H. erocuta the tendon of 
the flexor perforans, in accordance with the reduction in number of 
the toes, divides only into four slips. 
The lumbricales in Proteles are three in number, and pass to 
the three outer toes. In H. crocuta there are four, one to each 
toe. 
In Proéeles the flexor pollicis is incorporated with the flexor 
perforans digitorum; whereas in H. crocuta, on account of the 
rudimental hallux, the flexor pollicis is entirely deficient. In ZH. 
striata, however, Meckel asserts the existence of this muscle. 
The interossei in Proteles, as in H. crocuta, are arranged in two 
layers, a superficial and a deep. The superficial layer includes two 
muscles, which differ from the corresponding structures in H. crocuta 
inasmuch as they both arise from the base of the third metacarpal 
bone, instead of one from the third and the other from the fourth 
metacarpal as occurs in H. crocuta. The one passes to be inserted 
into the inner side of the base of the first phalanx of the fifth toe, 
whilst the other is inserted into the outer side of the base of the 
second toe. In H. crocuta these muscles are inserted into the outer 
and middle toes respectively. 
The deep layer consists of ten muscles arranged in pairs, two to 
Proc. Zoou. Soc.—1882, No. XXXIX. 39 
