84 MESSRS. MURIE AND MIVART ON THE 
bellies and as many tendons. One, arising from the astragalus and calcaneum (their 
outer surfaces), is inserted into the hallux, and may be regarded as the extensor brevis 
hallucis. Another, the outermost and somewhat superficial layer, has a similar origin 
to the last; its tendon is inserted into the peroneal side of the fourth digit. The other 
three bellies cover more deeply the dorsum of the foot, and at their proximal end are 
united together, but distally divide and send tendons to the second, fourth, and fifth 
digits respectively, the third digit having no tendon derived from this muscle. 
Perodicticus agrees with Galago garnettii in haying two slips and as many tendons. 
That to the hallux Van Campen names the extensor brevis hallucis'. 
In Tarsius Burmeister” describes the short extensor as consisting of three parts—the 
extensor brevis hallucis (40), the extensor of the second digit (51), and the extensor 
brevis digiti tertii (52). The last muscle is very elongated, arising, as it does, high up 
on the outside of the extremely long os calcis. 
In Cheiromys Professor Owen * found an extensor brevis of more or less separate parts, 
and going to the hallux and second and third digits. In our specimen, strange to say, 
no short extensor goes to the hallux in either foot, but in both feet there is a thin 
muscular layer arising from the tarsus (and but indistinctly divided into slips) and going 
by three tendons to the second, third, and fourth digits; that of the second digit gives 
off a small slip (on its peroneal side) uniting with that of the third digit. 
Fig. 20. 
FLA’ Vp, 
veld fi iw Diagrammatical sketch.—Flexor tendons of 
a H ' | the foot in the Slow Loris, from P. Z, 8. 1865, 
fy p. 253. 
1A) Mal | fp Ad 
j \y }} ; F.1.d. Flexor longus digitorum. 
a / F.1.h. Flexor longus hallucis. 
F.b.d. Flexor brevis digitorum. 
L. Lumbricales. 
P.b, Peroneus brevis. 
P.1. Peroneus longus. 
P.q.d. Peroneus quinti digiti. 
T.a, Tibialis anticus. 
E.1.h. Extensor longus hallucis. 
FLEXOR BREVIS DIGITORUM.—This is represented by two more or less distinct muscles, 
one arising from the plantar fascia, and furnishing the perforated tendon of the index 
of the foot and half that of the third digit, the other springing from the plantar surface 
* Loe. cit. pp. 44 & 45, pl. iii. fig. 14, 7. * Loe. cit. p. 83, tab. 4. fig. 5, and tab. 5. figs. 6 & 7. 
* Loc. cit. p. 68. 
