1896.] ANATOMY OF ZCHMOPHORUS MAJOR. 539 
the inner tendinous band and the thickened inner strand of the 
outer band, but above the rest of the tendon. The tensor longus 
tendon, as usual, dilates at the middle of the patagium into a 
yellowish thickened nodule of different appearance from the rest 
of the tendon. From this, or from its immediate neighbourhood, 
arise a few strands of tendinous tissue arranged in a fan-like 
fashion, which become collected into a thin tendon running 
obliquely across the patagium to be inserted on to the tendon of the 
extensor metacarpi. One of the thin strands which make up the 
patagial fan is directly continuous with the biceps slip. The 
muscle in fact appears to end in this tendon, and not to be inserted, 
as is more usually the case, into the tendon of the tensor iongus. 
The biceps is less fleshy than this muscle often is. The tendons 
of origin and insertion are continued over the greater part of the 
muscle as superficial tendinous sheets. The muscle has practically 
only one head of origin, that from the coracoid ; there is, however, 
what I believe to be the remains of the humeral head in the shape 
of an attachment to the under surface of the pectoralis major. 
The deltoid has an insertion upon the humerus of no great 
extent. It is attached to that bone for rather less than a third of 
its length. 
The anconeus has a humeral head which is a somewhat narrow 
tendon arising close to the insertion of the latissimus dorsi. 
The eapansor secundariorum appeared to be totally absent. 
The pectoralis major is rather a thin muscle; it is, however, for 
a portion of its extent divisible into two layers. The superior 
margin of the muscle, 7. ¢. that furthest away from the carina 
sterni, is largely tendinous. The insertion of the muscle on to the 
crest of the humerus is tendinous throughout for about the last 
eighth of an inch. 
The pectoralis minor is, as usual, a bipinnate muscle, but the 
lower side is much wider than the upper. Its origin from the 
sternum and the carina extends rather more than halfway down. 
The latissimus dorsi is as usual divided into two muscles, with a 
branch going to the skin (not always present in birds). This is 
the dorso-cutaneous of Fiirbringer. The last mentioned overlaps 
the entire origin of the posterior half of the muscle and is 
continuous with the origin of the anterior. 
The gluteus maximus consists of two separate parts. In front 
of the acetabulum is a not very wide (4 inch) strap-shaped band 
about the same size as the sartorius, which it partly overlaps. From 
the acetabulum to the very end of the ilium arises a sheet of 
muscle which completely covers the underlying biceps, and is 
inserted on to the fascia covering the leg from the knee to nearly 
halfway down. 
The gluteus medius is incompletely divided into two halves. 
They run side by side, and are inserted each by a separate tendon 
of insertion which are connected by a muscular part. 
The gluteus minimus is completely hidden by the last muscle ; 
it is small and entirely flesby and arises from the ilium only. 
3a* 
