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424 E. A. BAUMGARTNER 
lobe in pups. There is no evidence at any time of an extension 
of the lumen into any of the glandular columns of this part. In 
the adult all trace of a central cavity has disappeared, unless the 
small secretion spaces, to be described later, are remains of the 
original lumen. Occasionally there is a more or less prominent 
median dorsal extension of the cavity of the anterior into the 
superior lobe. In a very few cases this dorsally-extending cavity 
is continuous with a secretion space lying laterally. 
Table 3 shows the increase in size of the hypophysis; also, 
the length of the hypophysis at the median line, the greatest 
TABLE 3 
Showing increase in size of the hypophysis 
SIZE OF SPECIMEN assis ie MM. oF SUPEKION Low E ANTERION EXTHEMITY 
Embryo 22 mm. ...... 0.69 0.23 
Symmes: ae 0.81 0.40 0.22 
Spy MINIM cn ee sa + 1.04 0.96 0.30 
AQ nN eae 1.00 1207, 0.35 
O5mmimes ee 1.34 1.30 0.40 
Bape. eee eee 3.54 1.91 0.53 
UNc lili eee ed ee eee eaten ae 6.00 4.00 1.00 
width of the anterior extremity of the anterior lobe, and the 
greatest width of the superior lobe. The table shows there has 
been a constant increase in length which is rather more rapid 
in earlier stages. The increase in width of the superior lobe is 
a gradual one in the beginning. The anterior lobe, however, 
grows very little at first. This part doubles in width in its 
growth between the 22 mm. and the pup stages. It almost 
doubles again in its later growth. 
From a brief study of a few Torpedo embryos, I am inclined ~ 
to believe, with Sterzi, that the lateral lobes, described in this 
form by Gentes (’08) and others, are comparable with the infe- 
rior lobes of Acanthias. The embryos examined show no pre- 
hypophyseal body such as Chiarugi (’98) described in this 
genus, nor is there anything comparable to the prehypophyseal 
body found in the embryos or adults of Acanthias. 
