ANATOMY OF THE LEMUROIDEA. 87 
In L. varius we found two slips arising from the second and third metatarsals and 
from the fascia investing the interossei between those bones. 
It is small in the Galagos as compared with the Lemurs. In G. garnettii the 
adductor hallucis is separable into two slips, both arising from the plantar fascia, 
covering the interossei at the distal end of the second metacarpal and proximal end 
of the first phalanx of the second digit. Insertion, the one into the proximal end of 
the first phalanx of the hallux, the other into its distal end. The adductor hallucis 
partially covers the insertion of the first. j 
There is but one triangular-shaped slip in G. crassicaudatus (Pl. I. fig. 3, Pl. V. 
fig. 24, and Pl. VI. fig. 30) and in G. allenii, which is strong. Origin, the surface of the 
interossei of the second digit and the sesamoid bone at the proximal end of the hallux. 
Insertion, the distal end of the proximal phalanx of the hallux. 
In Nycticebus tardigradus (see fig. 7, p. 254, P. Z. S. 1865). 
Burmeister! describes the adductor hallucis as distinct from both, a superior and an 
inferior transversis pedis; but their insertions and origin are essentially similar to the 
more single muscular mass of the Lemuroids. 
In Cheiromys, according to our dissection, there is but a single muscular mass, if (as 
we have taken it) the muscular belly on the peroneal side of the long flexor tendon of 
the hallux be part of the flexor brevis hallucis. This single triangular mass may be 
more or less artificially divided into a smaller part arising from the proximal end of the 
plantar surface of the third metatarsal, and into another larger portion arising from the 
distal end of the same surface of the second and third metatarsals. They are inserted 
into the proximal end of the proximal phalanx of the hallux. 
FLEXOR BREVIS MINIMI DIGITI.—A muscle of moderate size, which arises from the base 
of the metatarsal bone of the fifth digit, and is inserted into the base of the first 
phalanx of that digit. 
The muscle named in Cuvier’s ‘ Recueil’ “adductor minimi digiti,” pl. 70. fig. 3, &, is, 
in all probability, really the flexor brevis. 
Figured in Galago crassicaudatus (Pl. II. fig. 3, and Pl. VI. fig. 25, F.6.m.d) and in 
Nycticebus tardigradus (woodcut, fig. 21). 
It is the same in Cheiromys and Tarsius as in Lemur catta; but Burmeister calls it 
“m. adductor minimi digiti,” p. 88, tab. 5. fig. 10. no. 48. 
ABDUCTOR MINIMI DIGITI°.—This is very large and fleshy, and arises from the under 
surface of the os calcis near its tuberosity, and from the tibial side of that tuberosity. It 
is inserted by a strong tendon into the peroneal side of the base of the proximal phalanx 
of the fifth digit. 
1 Loc. cit. p. 81, tab. 5. figs. 8 & 10. 
2 Confounded in the posthumous plates of Cuvier with that part of the flexor brevis which springs from 
the plantar fascia, as before said in speaking of that muscle, pl. 70. fig. 3 (Lemur varius). 
