Avdioiiiy of H 1/1(1. a urea. 363 



the fourth, as is usual. The length of the metatarsals also was 

 abnormal — the 4th, and especially the 5th, being much shorter 

 than the 3rd, instead of, as usual, equal in length with it. 



In ;inother individual (PI. xx.. Figs. 7a and 7b), both feet were 

 abnormal, and also unlike one another. In the left foot there 

 were only 4 toes, the metatarsal and phalanges of the first 

 being absent. In the right foot there were 6 toes, an additional 

 metatarsal and 2 phalanges being present on the postaxial side 

 of the normal 5th toe. The metatarsals of the .3rd, ith and 5th 

 toes are normal, that of the additional toe being onW equal in 

 length to that of the 2nd. The bases of the 4th and 5th meta- 

 tarsals, while not completely fused, are partially so. 



In a third individual, the right foot was normal, as also the 

 cakar. 3rd. 4th and 5tli toes of the left foot. The 1st toe on 

 the left foot contained only the one metacarpal and no phalanx, 

 as in the thumb. The 2nd toe contains only the one metacarpal 

 and one phalanx. The metacarpals of both 1st and 2nd toes are 

 swollen distally. 



There is no api^reciable difference in the other bones of the 

 \\m\) in any of the above cases. 



Bibliography. 



Adolphi, H. Morph. Jahrb., Bd. xix., 1893, p. 313. 



Adolphi, H. Morph. Jahrb., Bd. xxii., 1895, p. 449. 



Adolphi, H. Morph. Jahrb., Bd. xxv., 1898, p. 115. 



Bateson, W. Proc. Zool. Soc. Lond., 1892, p. 102. 



Bateson. W. ■ Materials for the Study of Variation," 1894. 



Benham. W. B. Proc. Zool. Soc. Lond., 1894, p. 477. 



Bourne, A. G. Quart. Jour. Micr. Sci., N.S., vol. xxiv., 1884, 

 p. 83. 



Cole, F. J. Proc. Biol. Soc. Liverpool, vol. 15, 1901, p. 114. 



Howes, G. B. Jour. Anat. and Phys., xxiv., 1890. p. xvi. 



Howes, G. B. Proc. Zool. Soc. Lond., 1893, p. 268. 



Marriner. O. P. Trans. X. Zealand Inst., \ jl. xxxviii., 1905. 

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Morgan, G. Lloyd. Nature, vol. 35. 1886, p. 53. 



Parker. G. H. Anat. Anz., Bd. xi., 1896, p. 711. 



Ridewood, W. G. Anat. Anz., Bd., xiii., 1897, p. 364. 



