260 MR. F. E. BEDDARD ON THE ANATOMY [June 6, 
umbilical ligaments and blood-vessels, it is noteworthy that in 
Eumeces algeriensis two hepatic arteries are associated each with 
one of the two umbilical ligaments of that lizard. 
Gastrosplenic Omentum.—This mesentery is very conspicuous in 
Gerrhosaurus. It stands out asa free fold with the following 
relations :—It arises from the stomach close to the pylorus and 
passes obliquely downwards supporting the posterior extremity of 
the spleen, the rest of which lies upon the mesogastrium ; it is 
finally attached to the median dorsal line of the body-wall on a 
level with the left ovary. 
This arrangement is practically repeated in Macroscincus, where, 
however, owing to the position of the viscera, the omentum is 
shorter, but very strong and fibrous. Moreover the spleen does 
not even reach, let alone hang over, the edge, as is the case with 
Gerrhosaurus. In Humeces, however, the gastrosplenic omentum 
is identical in its relations with that of Gerrhosaurus, save that it 
is a little less pronounced as a free fold. I am not describing 
here a state of affairs which is merely Lacertilian; for in T’upi- 
nambis the course and relations of the apparently homologous 
fold are different and do not involve the spleen. 
Hepato-pulmonary Ligaments.—Gerrhosaurus agrees with the 
majority of Lizards in that the right lung is suspended by two 
mesenteries, viz., the hepato-pulmonary and dorsal pulmonary. 
Tt is noteworthy that the latter mesentery in the case of both 
lungs extends to the very tip of the organ; whereas in Hwmeces 
the mesenteries in question do not reach the extremity of the 
lungs. This is not, however, a characteristic of the Skinks as 
opposed to Gerrhosaurus, for in Tiligua the membrane is co- 
extensive with each lung as in Gerrhosaurus. Mr. Butler * 
observes that “certain Scincoid lizards are as to the relations of 
their right lungs and liver intermediate between the Teiide and 
other Lizards.” My own knowledge of the family Scincide 
enables me to confirm Mr. Butler; but his accurate statement 
requires expansion’. In Hwmeces, Macroscincus, and Tiliqua 
there is, in fact, attached to the right lung a pulmo-hepatic liga- 
ment which is not so extensive as in, e. g., Gerrhosaurus. 
In Macroscincus cocteawi this membrane extends rather more 
than halfway down the lung and ends off upon the dorsal pul- 
monary ligament, necessarily running in this region in a direction 
nearly at right angles to the longitudinal axis of the lung. 
Whereas in Gerrhosaurus flavigularis the two pulmonary mem- 
branes join behind the right lung, in both specimens which I 
examined. 
The fact that there is no ligamentous interval between the 
* “On the Subdivision of the Body-cavity in Snakes,” P. Z.S. 1892, p. 481. 
+ And has also been expanded by Hochstetter quoted below. 
{ Hochstetter (Morph. Jahrb. xxvii. p. 292) figures the same membranes in some 
other Skinks, where they appear to agree with those of the forms studied by myself. 
He says, however, of Gerrhosaurus madagascariensis that the “caudal end of the 
right lung commences to be isolated from the ligamentum hepato-cavo-pulmonale.” 
It is not soin G. flavigularis. 
