iS8 
Mr, Home’s Observations , &c. 
HH. A set of oblique muscles which passes from the an- 
terior side of the bony extremity of each rib to the posterior 
edge of each scutum. 
1 1. Muscles which pass from the ribs near their heads ob- 
liquely backwards, to be inserted into the skin at the edge of 
each scutum. 
K. Muscles of the scuta. 
Plate V. 
An internal view of the abdominal muscles of the boa con- 
stricter. 
A A. The muscles which pass from cartilage to cartilage 
of the different ribs. 
B B. A set of muscles which passes from the point of each 
rib over two ribs to the middle of the third. 
C C. A similar set of muscles continued from the opposite 
side of the rib, passing over three ribs to the body of the ver- 
tebra. 
D D. The abdominal muscles which arise from the anterior 
edge of each rib, and pass to the linea alba. 
EE. The linea alba. 
F F. The termination of the set of oblique muscles which 
passes from the bony extremities of the ribs to the edges of 
the scuta. 
G G. The muscles of the scuta consisting of two sets which 
decussate each other. 
Plate VI. 
Represents two vertebrae and portions of ribs of the large 
boa to show their articulating surfaces. 
a a. The process peculiar to the vertebra of the boa. 
