ANATOMY OF THE LEMUROIDEA. 113 
Fig. 27. Anterior view of lower left hind leg and foot of the Black-fronted Lemur 
(L. nigrifrons), showing the double tibialis anticus muscle, &c., and short 
tarsal bones. 
P.b. Peroneus brevis. 
P.A.d, P.4.d*. Peroneus quarti digiti. 
P.5.d. Peroneus quinti digiti (muscular 
T.a'. Tibialis anticus primus. 
Gz 3 - secundus. 
E.p.h. Extensor proprius hallucis. 
E.l.d. ~é longus digitorum. belly). 
E.b.d. ~ brevis digitorum. P.5.d*. Peroneus quinti digiti (tendon of 
1,2,3,4,5. Digits (distal ends, metatarsals). same. 
P.J. Peroneus longus. 
Fig. 28. Slightly enlarged semidiagrammatic representation of the head of the tibia and 
fibula of the Ring-tailed Lemur (L. catta), showing the rotator fibule and its 
muscular relations, seen behind and slightly outwards; from a sketch by 
Mr. Mivart. 
Rfb. Rotator fibule. Po. Popliteus, transversely cut through. F./.d. Flexor longus 
digitorum, passing from before backwards. T\p. Tibialis posticus. F./.h. Flexor 
longus hallucis. 
Fig. 29. Anterior and outer view of the same. Ta. Tibialis anticus. The other letters 
are as in Fig. 28. Here the origin of the flexor longus digitorum is seen to 
be in front of the rotator fibule. 
Fig. 30. Enlarged plantar surface of left foot of Galago crassicaudatus—the elongated 
tarsus being thus well displayed, and the short muscles and interossei better 
defined. 
Ab.m.d. Abductor minimi digiti (dragged | 4b.h. Abductor hallucis. 
out), F.b.h. Flexor brevis hallucis. 
Ab.o.m.5. Adductor ossis metacarpi quinti Ad.h. Adductor hallucis. 
(dragged out). 
Fb.m.d. Flexor brevis minimi digiti. 
1,2,3,4,5. Digits, four of them being 
shown only as far as the proximal 
phalanx. 
LI,f,I. Four pairs of double interosei. 
Is', Is’, First and second superficial single 
interosseous muscles. 
Lyp.l. Long plantar ligament. 
Fig. 31. Short deep muscles of the ventral surface of the neck in the Aye-Aye (Chei- 
romys madagascariensis), reduced in size. 
f.a.ma. Rectus capitis anticus major. 
R.a.mi. Rectus capitis anticus minor. F./. 
Rectus lateralis. Zc’. Longus colli; first portion. Z.c%. Second portion of same 
muscle, dragged out by a hook. L.c*. Third portion of the longus colli. 
VOL. VII.—PART I. 
Q 
