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Show 1889.] T H E BODY-CAVITY IN LIZARDS, ETC. 465 (cf. Plates XLVI.-XLIX. figs. 1-4 and woodcut A, p. 465), and the membranes between the lung and liver are the pulmohepatic ligaments. The ligaments of the right side and consequently the corresponding recess is fully developed in the following genera :- Lacerta (viridis, muralis). Uromastyx. Lguana (tuberculata). Chamceleon. Gerrhosaurus (flavigularis). Sphenodon. Goniocephalus (sophiee). Trachidosaurus. In the last-named genus the posterior end of the lung is attached by a separate membrane to the ligament between the liver and dorsal wall. The Teiidae are the only family in which I have met with the condition in which the lung of each side is suspended freely by its more dorsal ligament, with a consequent absence of pulmohepatic recess. This condition is visible in the following, which are the only representatives of the family that I have examined:- Tupinambis (teguixin) (Tejus teguexim, Gray). ,, (nigropunctatus). Ameiva (surinamensis). Callopistes (maculatus). The two types of lung-suspension referred to may be thus diagram-matically represented 1:- 7l "> " - - li Fig. A. Diagrammatic section of one of the lizards included in the first list given above, taken through the lungs and liver. Fig. B. A similar section of one of the Teiidte, mentioned in the second list. a, pulmohepatic ligament; ces, oesophagus; h, hi, right and left liver-lobes; m, median thoracic septum ; pul, lung. A second set of attachments of the liver frequently met with are ventral ligaments that run outwards from the pericardium, or the 1 It may be noted that two similar types occur among the Amphibia. Thus, in the Salamander all the membranous attachments of the lungs and liver seem to be precisely similar to those in the common Lacertilian type (e.g. Lacerta). But in the Frog the two lungs hang freely suspended on either side, as in the Teiidte. |