10 MESSRS. F. E. BEDDARD AND F. TREVES ON THE [Jan. 15, 



region of the gut with blood, if the circulation in the main arteries 

 happened to be occluded. 



In the Sumatran Rhinoceros the same fold occurs ; but (at least 

 in one specimen) it was of limited extent compared to the fold in 

 the Sondaic Rhinoceros ; it commenced at about the same point, but 

 terminated at the beginning of the smooth portion of the colic loop. 

 Furthermore this fold appeared to have no artery ; or if an artery 

 was present it must have been very small indeed. 



The ileo-csecal fossa figured and described by us in Rhinoceros 

 sondaicus was present in the Sumatran species ; but, instead of being 

 large enough to contain the entire fist, it was only of the diameter of 

 the fore finger ; this difference is not at all commensurate with the 

 difference in size of the individuals of the two species. 



Fig. 2 (p. II) represents the nasal diverticulum of this species ; this 

 organ, which is known to occur in the Horse and in the Tapir, has 

 not yet been described in the Rhinoceros ; as will be seen from the 

 figure, it is not widely different from that of the Tapir. Our figure 

 may be compared with the late H. N. Turner's figure (P. Z. S. 1850, 

 p. 104) of the same organ in Tapirus americanus. 



On some of the Muscles of the Fore Limb. 



Rkomboideits. — A small muscle, 8 inches wide, fleshy. It is in- 

 serted into the whole length of the vertebral border of the scapula. 



Levator anguli scapuH. — A separate one cannot be made out. 



Serraius magnus. — An enormous fleshy muscle with very coarse 

 fibres inserted into the venter of the scapula over a surface 1 in. by 

 G in. Insertion comes between rhomboideus and subscapularis. 



Subscapularis. — This muscle is aponeurotic on the surface, muscular 

 beneath. Arises from whole of the venter of scapula beyond serratus 

 magnus. In contact with supraspinatus above and overlapped 

 origin of triceps below. Arises from aponeurotic covering of triceps. 

 Lower border intimately blended with teres major. It is inserted 

 into the trochanter by a wide tendon. It crossed capsule ; bursa 

 between it and capsule in communication with the joint. 



Latissimus dorsi. — Crossed whole of triceps, then ran parallel with 

 and underneath teres major. Inserted into front of humerus by a 

 tendon. This tendon was below the trochanter and to the extensor 

 side of the biceps, and under the coraco-brachialis ; it was common 

 to the latissimus dorsi and teres major. The great bulk of the 

 latissimus dorsi ended in an aponeurosis. This blended with the 

 aponeurosis of the triceps about four inches from the humerus ; the 

 rest passed down and joined the fascia of the forearm over the 

 ulna. 



Teres major (fig. 3). — It lies between subscapularis and latissimus 

 dorsi. It arose from inferior angle of scapula, from part of its 

 inferior border, and from aponeurosis at origin of the triceps. Joined 

 the latissimus dorsi. 



Coraco-brachialis. — Arises by a strong tendon from the coracoid 



