ANATOMY OF THE LEMUROIDEA. 55 
and no trace of a depressor scapule, except on the right side of one specimen of G. cras- 
sicaudatus, where a few muscular fibres arise from a delicate fascia immediately beneath 
the latissimus and run on into the teres major, being more or less adherent to the 
posterior vertebral angle of the scapula (Pl. III. fig. 7, D. sc). 
In Nycticebus the rhomboid is well defined below, and there is no depressor scapulz. 
In the Potto* such a muscle appears to be absent. 
In Tarsius*, as before said, this is stated to exist, arising as a thin, long muscle from 
the lumbar fascia in the region of the last rib and adjacent parts. It passes forwards, 
overlapping the latissimus dorsi, and is strongly inserted into the posterior vertebral 
angle of the scapula. It is said to be in relation with the trapezius, and to cover the 
teres minor and infraspinatus. 
In Cheiromys we found no distinct muscle; but, as we have said, a portion of the 
conjoined rhomboideus and latissimus dorsi (more belonging to the former muscle, 
however) is inserted into the posterior vertebral angle of the scapula and adjacent 
portion of its axillary margin. See Pl. III. fig. 8. This appears to answer to Kingma’s 
separate muscle. 
RuomsBoivEvs *.—In Lemur catta it is less extensive in its origin than as described by 
Meckel‘ in the Lemurs generally. It arises from the spinous processes of the last two 
cervical and first four dorsal vertebrae, and is inserted into the vertebral border of the 
scapula. 
In Galago crassicaudatus (P1. III. figs. 6 & 7, Rh) it has attachment from the third 
cervical to fourth dorsal vertebre. 
In G. allenti we found one side to have but a single rhomboideus muscle, with a 
similar origin and insertion to that of Lemur catta; but on the opposite side of our 
specimen there appeared a very slight separation of the fibres, sufficient to indicate a 
rhomboideus major and minor, the latter of which seemed the larger of the two. 
There is but one rhomboid muscle in Nycticebus*, which has a higher origin than in 
L. catta, namely, from between the fourth and fifth cervical neural spines down to the 
fifth dorsal. 
In Perodicticus® it is similar, the major and minor being united. 
There are said to be two rhomboidei in Tarsius’; but one of them is evidently our 
rhomboideus capitis. 
Cheiromys has a largely developed single rhomboideus, which is entirely muscular, 
It arises from the ligamentum nuche for the whole length of the neck and from the 
first two dorsal vertebree. (Professor Owen has not described this muscle, nor yet the 
following one.) Its posterior margin is fused with the latissimus dorsi, so that no limit 
1 Loc. cit. p. 31. * Loe. cit. 
3 See Cuvier, pl. 69. fig. 1, c!, c? (LZ. varius). * Anat. Comp. vol. vi. p. 244. 
5 Pp, Z, 8. 1865, p. 242, ° Op. cit. p. 31. 7 Op. cit. p. 47, tab. 4. fig. 1. 6. 
