234 



THE AMERICAN NATURALIST [Vol. XLV1I 



The table shows clearly that while the range in the maternal 

 ratio is .24, the range in the means is only .14 and that there 

 is no close relation between the order of the maternal ratios 

 and the order of the fraternal means. In all the fraternities 

 the mode stands in the 1.50-1.59 class. 



Conclusions 



In so far as this series goes, then, it speaks for the conclusion 

 that, in the parthenogenetic Aphis rumicis, the progeny does 

 not inherit the somatic idiosyncrasies of the parent but does 

 inherit from the underlying germ plasm common to all; and 

 hence progeny of somatically quite different sisters tend, on the 

 average, to be alike. The somatic differences in the partheno- 

 genetic line are not inherited. 



James P. Kelly 



BIBLIOGRAPHY 



Haxel, Elise. 1907. Vererbung bei ungeschlechtlicher Fortpflanzung von 

 Hydra grisca. Jenaisclic Zeitxchr.. 43, pp. 321-372. 



Jexxixos. IT. S. 1909. Heredity and Variation in the Simplest Organisms. 

 Amer. Nat., XLIII, pp. 321-337. 



Shull, A. Franklin. 1910. The Artificial Production of the Partheno- 

 genetic and Sexual Phases of the Life Cycle of Hydatina senta. Amer. 



Whitney, D. D. 1912. "Strains" in Hydatina senta. Biol Bull., XXII, 



THE HIMALAYAN RABBIT CASE, WITH SOME CON- 

 SIDERATIONS ON MULTIPLE ALLELOMORPHS 

 It has been shown by Castle ( '06, '09), Hurst ( '06) and Pun- 

 nett ('12) that the Himalayan pattern in rabbits behaves as a 

 simple recessive to self color, and as a simple dominant to alb 

 Thus, as Punnett points out, we might suppose self to be 

 double dominant, Himalayan a recessive in one factor, and al- 

 bino a double recessive. But, to use Punnett 's word? 



