58 MESSRS. MURIE AND MIVART ON THE 
Latissiavs Dorst!.—This arises from the spines of the dorsal vertebre from the sixth 
backwards, and from the lumbar fascia; it is inserted as usual. We could detect no 
trace? of any slips going to the pectoralis major as mentioned by Meckel’, and as is the 
case in the Lemurs. 
Figured in Galago crassicaudatus (PI. II. fig. 5, Pl. III. figs. 5, 6, & 7, and Pl. IV. 
figs. 13 & 14, La.d). 
In the Potto‘ it springs from the ten hindermost dorsal vertebre. 
In Zursius® it is as in L. catta, but overlapped by the depressor scapule. 
In Cheiromys® from the last five ribs and the common tendon of the erector spine. 
As has been said, its outer margin is fused indistinguishably with the rhomboideus. 
For the Dorso-EPITROCHLEAR muscle, see antea, p. 32. 
SERRATUS POSTICUS ANTERIOR’.—This is a thin, small muscle which has origin by a 
delicate aponeurosis from the last cervical and the first four dorsal vertebree, and is 
inserted into the second, third, fourth, fifth, and sixth ribs. 
In L. varius it is also inserted into the first rib. In ZL. canthomystax it has the 
same number of insertions, namely six, but it is altogether more aponeurotic than 
muscular. 
In Galago crassicaudatus (P\. III. fig. 6, and Pl. IV. fig. 9, S.p.a) as in our type 
L. catta. 
In G. allenii it arises by aponeurosis from the third and fourth last cervical vertebrze 
and the anterior dorsal vertebrae, and is inserted into the third, fourth, and fifth ribs. 
This muscle is wanting in Perodicticus; or at least Van Campen says so’. 
In Zarsius? it has six serrations, extending from the second to the seventh rib. 
In Cheiromys this muscle is as in L. catta, excepting that it only reaches the fifth rib. 
SERRATUS POSTICUS POSTERIOR.—Lhis is very indistinctly marked. It appears to arise 
from the fascia lumborum, and to be inserted into the last four or five ribs, not counting 
the very short thirteenth rib. 
The muscle and its digitations are clearly defined in Galago crassicaudatus (PI. IL. fig. 3, 
Pl. III. fig. 6, and Pl. IV. fig. 9, S.p.p), where its attachments are as in Lemur catta. 
We only noticed two digitations in Nycticebus tardigradus. 
According to Van Campen” this muscle in Potto “is there as ordinary.” 
In Tarsius" it has six digitations; from the seventh to the thirteenth rib, and is 
stronger than the serratus posticus anterior. 
In Cheiromys it is, in our specimen, distinctly marked, and inserted by broad digita- 
‘ See Cuvier, 7. c. pl. 68. fig. 1, and pl. 69. fig. 1,1. in Z. varius, and pl. 67. fig. I. in Loris gracilis. 
> Cuvier in his figure of Z. varius, pl. 68. fig. 1, 5°, represents a slip as coming from the latissimus dorsi, joining 
the third part of the pectoralis major near its insertion; it is, however, spoken of as cutaneous. 
3 Loc. cit. p. 267. * Loe. cit. p. 30. 5 Loe. cit. p. 50, tab. 3. fig. 1. 16. 
® Loe. cit. p. 59. 7 See Cuvier, pl. 71. fig. 1. 10. § Loc. cit. p. 31. 
2 Loe. cit. p. 39, tab. 4, figs. 1 & A. © Loe. cit. p. 31. " Loe. cit. p. 39. 
