360 Coe and Kunkel— California Limbless Lizard. 
wavy in outline. In a few cases the spleen was attached to the 
pancreatic lobe only by a narrow mass of connective tissue. 
Lungs.—As stated above, the right lung is much elongated and 
well developed, while the left is small and rudimentary, although 
remaining functional. Both lungs are provided with a similar ante- 
rior lobe. 
The larger, right lung is long and tubular, being largest in its 
middle portion and tapering gradually to the slender, pointed pos- 
terior end (text-fig. 8). The trachea enters the median border of 
this lung a short distance behind the anterior end, which is thus 
extended forward as a short anterior lobe. The lumen of this lobe 
is directly continuous posteriorly with that of the main portion of 
the lung, although there is often a slight constriction in this region. 
If the constriction becomes conspicuous, the opening into the poste- 
rior end of the anterior lobe is comparatively narrow. 
The left lung is usually less than one fourth as long as the right, 
the cavities of the two being in all the individuals examined con- 
nected only by a narrow opening (text-fig. 8). 
Cope’s statement (:00, p. 670) that the two 
lungs are fused proximally, ‘‘so that there is 
but a single lumen,” is therefore erroneous or 
founded on an abnormal or artificial condition. 
The actual opening is small, oval in outline, and 
situated at the extreme posterior end of the 
trachea, which passes for a short distance along 
the median border of this as well as of the right 
lung. In this way the left lung is provided 
with an anterior lobe, projecting forward in 
front of the tracheal opening just as in the case 
of the right lung. The anterior end of this 
lobe is rounded and often fully as large as the 
corresponding lobe of the other lung. <A slight 
; constriction or lateral indentation usually occurs 
Figure 8.—Outline of , j 
lungs, showing large to demarcate the anterior lobe more definitely. 
Seas. at rudi- = Although the cavities of the two lungs are so 
Tel ral separated, yet the left lung is closely bound 
to the right by a strong sheet of connective tissue. The left lung is 
thus held closely appressed to the right except at its anterior and 
posterior extremities. 
Although there exists such great discrepancy in size between the 
two lungs, yet both are functional in all parts. The walls of both 
are thin and membranous, the reticulate bars or laminze, which carry 
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