STUDIES IN THE EXPERIMENTAL ANALYSIS OP SEX. 603 
11. Herbst, C. — ‘ Formative Reize,’ Leipzig, 1901. 
12 . Kellogg, V. — ‘ Journ. Exp. Zool.,’ vol. i, 1905, p. 601. 
13. Meisenheimer, E. — ‘Verliandl. Dentscli. Zool. Gesellscb.,’ June, 
1908, p. 84. 
14 . Cunningham, J. T. — “The Heredity of Secondaiy Sexual Cha- 
racters,” ‘ Arch. Entwicklungs-mechanik. der Organismen,’ xxvi, 
1908, p. 372. 
15 . Potts, F. A. — ‘ Quai-t. Journ. Micr. Sci.,’ vol. 50, 1906, p. 599. 
16 . Heape, W. — ‘Proc. Physiol. Soc.,’ December, 1905; ‘Quai’t. Joum. 
Micr. Sci.,’ vol. 44, 1900, p. 1 ; ‘ Proc. Roy. Soc. London,’ Ixxvi, 
1905, p. 260. 
EXPLANATION OE PLATE 30, 
Illustrating Mr. Geoffrey Smith’s paper on “ Studies in the 
Experimental Analysis of Sex.” 
In figs. 1, 3, 4, 7, 10 and 13 only the right chela is shown, the other 
thoracic limbs being omitted. 
All figures are of Inachus mauritanicus. 
Fig. 1 . — Adult normal male. 
Fig. 2. — Under-side of abdomen of normal adult male. 
Fig. 3. — Male infected with Sacculina, showing reduction of chela 
and slight broadening of abdomen. 
Fig. 4. — Male infected with Sacculina, showing reduction of chela 
and increased broadening of abdomen. 
Fig. 5. — Under-side of abdomen of tig. 4, showing attenuated copu- 
latory styles and slight hollowing-out of abdomen. 
Fig. 6.— Under-side of abdomen of a similar male specimen, showing 
reduction of copulatory styles and presence of asymmetrically placed 
swimmerets, characteristic of female. 
Fig. 7. — Male infected with Sacculina, which has assumed com- 
plete female appearance. 
Fig. 8. — Under-side of abdomen of fig. 7, showing much reduced 
copulatory styles and reduced swimmerets. 
Fig. 9. — Under-side of abdomen of a similar male specimen, showing 
well-developed copulatory styles and swimmerets. 
