295 J. Beard 



Table 2. Small forms from disc. 



size state of sexual organs 



0.7 mm regulär ovarial epìthelium (figs. 7 and 8, 

 fig. 10). 

 94 0.7 - very small eggs and regulär ovarial epi- 



thelium. 

 97 0.73 - ovarial epithelium and small eggs (figs. 2 



and 3). 

 small eggs (fig. 1). 

 well marked eggs (figs. 6 and 9). 

 numerous very small eggs. 

 large eggs. 

 numerous large eggs. 

 many large eggs and some in uterus. 

 smaller eggs than preceding. 

 small eggs, fairly numerous. 

 many large eggs (figs. 4 and 5). 



So far as the mal es are concerned, the result may be sum- 

 marised tbus: — always full of ripe spermatozoa and sperm mother- 

 cellS; and ali traces of female cells absent. In ali the forms of 

 table 2, as in the males, numerous well-developed spermatozoa were 

 present. This point will be referred to later on. 



It may be assumed that we are justified in comparing the males 

 nos. 4—7 (tab. 1) with the hermaphrodites nos. 1—9 (tab. 2). The 

 extremes in both cases are of about equal dimensions, and each 

 series contains a gradation of forms from those of about 0.576 mm 

 in diameter to those of double that size. 



It will be seen that undoubted eggs were found in ali the 

 hermaphrodites or disc-forms between these limits, the youngest and 

 smallest individuals showing them in a very early phase of develop- 

 ment. None the less, the ovarian nature of these cells was beyond 

 question. 



This being the case, one would, from Nansen's standpoint, also 

 expect to find some traces of ovaries in the males nos. 4 — 7. Not 

 a single celi, which might bave been identified as an egg-cell, could 

 be detected in any of them, and the positions occupied by ovarian 

 cells in the forms of the second table were bere taken up by mother- 



