54 MESSRS. MURIE AND MIVART ON THE 
bicipital groove, between the insertion of the teres major and the high-reaching inner 
portion of the triceps. 
The long head reaches down to the supracondyloid arch. This therefore corresponds 
to what, according to Mr. John Wood's! reading, is his ‘ coraco-brachialis longus.” 
Meckel? says that this muscle is found divided in the Makis as in many other animals. 
In L. varius we found the coraco-brachialis and biceps on the right side to be attached 
to the coracoid process by a sesamoid bone. 
In L. nigrifrons it is also double. The long portion arises tendinous from the 
coracoid, and continues so, mingling the fibres of the second portion, to the middle of 
the humerus, where it becomes fleshy, and is inserted upon the supracondyloid arch. 
The short arch is also tendinous, but sooner becomes muscular. 
In Galago crassicaudatus a long, strong, and a short weaker belly exist (Pl. II. fig. 3, 
Pl, Il. fig. 5, and Pl. IV. fig. 14, C.o* & C.0?). 
This muscle has likewise a second slip in G. alleni?, and the two parts have much the 
same origin and insertion as in Lemur catta. Also in G. peli. 
In Loris gracilis and in Nycticebus tardigradus* we ourselves have found the coraco- 
brachialis to consist of two portions. §. van der Kolk and Vrolik®, however, say 
nothing of the short head, although remarking that it proceeds as far as the internal 
condyle of the humerus. 
Van Campen avers it is double in Perodicticus*; as likewise does Burmeister in 
Tarsius’ ; and Professor Owen records the same condition existent in Cheiromys*. 
BRACHIALIS ANTICUS’.—This arises from the whole outer (radial) side of the humerus 
to its summit, being overlapped by the external part of the triceps; it also arises from 
the front of the humerus as far inwards as the insertion of the coraco-brachialis, but 
nevertheless it does not at all embrace the insertion of the deltoid. It is inserted into 
the coronoid process of the ulna. 
In Lemur varius, L. xanthomystax, and L. nigrifrons this muscle is as in L. catta. 
There is no junction of the fibres with those of the supinator longus, although the 
muscles are indeed very close together. 
The same in Galago crassicaudatus (PI. II. fig. 3, Pl. III. fig. 6, and Pl. IV. figs. 13 
& 14, B.a.). 
It is spoken of by Burmeister” in 7wrsius as brachialis internus. 
No substantial difference from L. catta in Cheiromys"'. 
‘ Journ. of Anat, and Physiol. (Cambridge) 1867, vol. i. p. 49. 2 Loe. cit. p. 281. 
* Kingma, l. c. p. 24. 4 P. Z. 8. 1865, p. 244. ° Op. cit. p. 45. ° Loe. cit. p. 33. 
7 Loe. cit. p. 49, tab. 3, fig. 2, nos. 14 and 146. 8 Loe. cit. p. 60, pl. xxiii. fig. 1, nos. 14 and 148. 
* Figured in Cuvier’s ‘ Recueil,’ pl. 68. fig. 2, s, of Z. varius, and pl. 67. fig. 1, s, in Loris gracilis, 
° Loe, cit. p. 52, tab. 3. figs, 1, 21. 1 Loe. cit. p. 60, pl. xxiii. fig. 1, no, 21. 
