495 
that articulates with the body a little to the right of the cloacal ori- 
fice. The head also is malformed, the eyeballs are absent, the cere- 
bral hemispheres are exposed and the upper biil absent; in the latter 
condition it resembles that of chick number 7. 
10. This specimen is of a kitten at full term and presents four 
hind legs and a malformation of left eye and submaxillary region 
(Fig. 8). In the gross specimen the duplication of the caudal portion 
of the body starts in the lumbar region. Both parts are equally devel- 
oped, both sets of pelvic limbs and both tails are apparently large. 
The anal orifice and genitalia 
seem normal. Upon dissection 
the duplication starts at the se- ~ | 
cond lumbar vertebra. The first © 
lumbar vertebra is single, but 
larger than usual with a single 
almost -shaped spinous process. 
The other six vertebrae in each 
set diverge from each other at 
an angle of about 60° and pre- 
sent nothing unusual. 
Upon opening the thoracic 
and abdominal cavities, the fol- 
lowing is observed: one heart, 
one pair of lungs in the thoracic 
cavity. In the abdominal cavity 
there are one spleen, one sto- 
mach, one small intestine and 
one pancreas. The ileum ends Fig. 10. Calf’s head showing partial 
between two ceca, each of which duplication. A intermandibular ridge con- 
; tinuing as arch, B, D median portion of 
continues as colon and rectum palate C; D D lateral palatal shelves; EH 
to its respective anal orifice. right nasal septum; F'single base of tongue. 
No ascending and transverse 
colons as such could be distinguished. There is but one pair of kid- 
neys, one for each body. There are two bladders, each of which 
receives the ureter from the kidney of its side. There is but one 
ovary, uterine tube and vagina in each body. 
The head presents two anterior nares but no oral aperture. The 
submaxillary region is hairy, but at the junction of the region with 
the neck proper, a small smooth, bifurcated teat-like process ‘is seen 

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