Zoology. 467 
St., Interstapedial; J., Jugal; Ll., Lower labial cartilage; Mk., 
Meckel’s cartilage; Mx., Maxillary; Mn., Mandible; M. S., Me- 
sostapedial; O. C., Occipital condyle; P., Parietal; Par., Parasphe- 
noid; Pg., Pterygoid; Pm., Premaxillary; Q., Quadrate; Q. C., 
Quadrate cartilage; S. St., Stapes; Sq., Squamosal; Sl. Superior 
labial cartilage; T., Trabeculum. Cartilage, dotted ; ligament and ` 
membrane, lined; bone, blank. 
SYSTEMATIC Posrrion oF THE Monrrors.—F. E. Beddard 
(Anat. Anzeiger, 1888) points out that the Monitoride are in several 
features widely separated from the other Lacertilia, and that the 
same peculiarities tend to ally them to the Crocodiles. Among the 
points discovered by other naturalists he mentions the arrangement 
and development of the teeth, the complicated network formed by 
the hepatic and cystic ducts, and the arrangement of the blood ves- 
sels of the neck. The new features are: On cutting through the 
abdominal wall the viscera are not at once brought into view, as 
they are enveloped by a fold of the peritoneum which forms a 
closed sac completely separating the abdominal viscera from the 
heart and lungs. This feature is compared to a similar structure 
described by all students of crocodilian anatomy. Huxley com- 
pares this last with the oblique septum of the bird, but Beddard 
thinks it equivalent to the septum and to the so-called omentum as 
well and at the same time but an exaggeration of the structure 
occurring in the Monitors. If his points are well made (that the 
Monitors are not closely allied to the other Lacertilia but rather to 
the Crocodilia) Beddard thinks that the ancestry of the Crocodiles 
must be sought in the direction of the Monitoride. 
A Cow Witn Oxe Kipney.—I lately saw butchered a healthy 
cow which had but one kidney, the right one. It was double the 
usual size and weight; length 11 inches, width 43 inches, weight 
2tlbs., thickness 2 inches, The ureter was present on the left side. 
—Henry Shimer, M.D., Mount Carroll, IU. 
