1891.] MR. F. E. BEDDARD ON HAPALEMUll GRISEUS. A59 



3. Latissimus dorsi from the posterior dorsal vertebrae, slightly 

 overlapped in front by the trapezius, and from the lumbar f^iscia ; it 

 gives off a very decided sUp to the pectoralis, which is attached to 

 that muscle by a flat tendon. 



4. Dorso-epitrochtear arises from the latissimus dorsi just before 

 it becomes tendinous ; it is inserted by a broad thin tendon on to 

 the ulna for a space of |-| inch from the olecranon. 



5. Serratus magnus arises from the first 8 ribs and from the 

 cervical vertebrae ; it is attached to the posterior two-thirds of the 

 vertebral border of the scapula. 



G. Pectoralis major c^msista of two separable psrts only : (1) a 

 clavicular portion from the sterno-clavicular articulation, and (2) a 

 pectoral portion from the sternum and from a few ribs behind the 

 sternum. 



I could find no trace of the second pectoral muscle, Pectoralis 

 minor. 



7. The Subclnvius passes from the first rih to tlie clavicle. 



8. Biceps. — This muscle is two-lieaded : the long head arises by 

 a long flat tendon passing underneath an annular ligament ; the 

 second head arises in conmion with the coraco-brachiatis longus and 

 is apparently fused with that muscle for some way. 



9. Coraco-brachialis is also a double muscle ; the part lying 

 behind the insertion of the teres major (the other part lies in front) 

 is very short and only reaches about one quarter way down tlie 

 insertion of the said muscle. 



10. Triceps has the usual three heads : the long head arises from 

 the lower border of the scapula and also from a fascia covering the 

 infra-spinatus ; the second head arises from the head of the humerus ; 

 the third from nearly the whole of the shaft of tlie humerus ; the 

 anterior part of this forms an almost distinct head, which appears 

 to correspond to that referred to by Messrs. Murie and Mivart as 

 the " fourth head." 



1 1 . Bracliialis anticus arises high up on the radial side of the 

 humerus and twists round to the other side, receiving fibres the 

 whole way. 



12. The Teres major is a large muscle, inserted as usual and 

 separately by a stout flat tendon. 



13. Teres minor is present, as in other Lemurs. 



14. Flexor sublimis digitorum. — This is a small muscle arising 

 from the internal condyle of the humerus ; about halfway down the 

 forearm a thin tendon is given off which passes to the conjoined 

 deep flexor tendons ; later the tendon of this muscle splits into four, 

 wliich supply digits II. -V. The two middle tendons are the 

 thickest and are of equal size ; the two outer tendons are considerably 

 thinner, but also equisized. 



15. The Palmaris lonffus arises from the internal condyle; the 

 tendon is | of the length of the entire muscle. 



16. Flexor carpi ulnaris is not in any way remarkable. 



17. 18. The Flexor profundus digitorum and the Flexor longus 

 poUicis blend together before the wrist while yet muscular, thou"-h 



