886 MR. ST. GEORGE MIVART ON THE [ Dec. 6, 
flexor brevis hallucis superficial to it), goes to the three peroneal 
digits with three delicate tendons. It forms a fleshy mass, which is 
superficial to the long flexor tendons. 
Flexor brevis hallucis (fig. 23, B. H). A short thick muscular 
mass arises from the plantar ossicle, and from the ligament which 
connects together the tibial and peroneal margins of the tarsus on 
its plantar aspect. It is inserted into the tibial aspect of the hallux, 
distad and tibiad to the insertion of the tibialis anticus. 
Flexor brevis minimi digiti (fig. 23, B. M). This arises from the 
peroneal aspect of the plantar ossicle, and is inserted into the same 
side of the fifth digit down to (including) the penultimate joint of 
that digit. 
Adductor digiti secundi. A muscle springs from the ligament 
which connects the second and third metatarsals, and is inserted into 
the peroneal side of the second digit. 
Adductor digiti tertii. Another muscle similarly springs from the 
same ligament, and is inserted into the tibial side of the third digit. 
The extensores metatarsorum are very numerous ; but all are short 
muscles, except the one which goes to the hallux. 
Extensores I. and II. (fig. 18, 19, 25, & 26, #. 1&2). The 
extensor of the second digit is double, like that of the pollex. 
The larger and longer part arises from the front of the fibula 
(covered by the peroneus and extensor longus digitorum) for nearly 
its lower two-thirds. Passing downward, it is inserted by tendon 
into the distal part of the dorsum of the second metatarsal. The 
second part, much smaller, takes origin below the first part, and, 
joining it, is inserted together with it. 
Extensor III. A very small muscle springs from the fascia in 
front of the central tarsal ossicle, and is inserted into the dorsum of 
the first metatarsal. 
Extensor IV. A similarly small muscle, similarly arising, but 
inserted into the dorsum of the second metatarsal. 
Extensor V. Another small muscle arising similarly is inserted 
into the dorsum of the third metatarsal, passing out between the 
extensor longus digitorum and the extensores I. and II. 
Extensores VI. and VII. (fig. 25, Z.6 & 7). These two small 
muscles have again a similar origin, and are inserted into the distal 
parts of the upper surfaces of the fourth and fifth metatarsals. 
Extensor VIII. (fig. 25, E.8). This is a somewhat larger muscle. 
It arises from the lower end of the peroneal border of the fibula. 
Passing downward, it is inserted into the distal end of the dorsum 
of the fifth metatarsal. 
The extensor LX. (figs. 25 & 26, #. 9) springs from the distal 
end of the fibula and from the peroneal tarsal bone. Passing down- 
ward, and radiating in a fan-like manner, it is inserted into the dor- 
sum of the fifth metatarsal. 
Beside these extensores of the metatarsal bones, there are five 
extensores of the phalanges, extensores phalangorum (fig. 26, B. 3, 
B.4, & B.5). Of these each passes from the dorsum of one of the 
metatarsals to the ungual phalanx of the same digit. 
