The Clu'omosomes of Euschistus variolarius, Euschistus servus etc. 507 
The lower two specimens of photo 62 and the lowest specimcn of 
plioto 66 (Foot and Strobell ’14) show only a very faint and small 
variolarius spot, and thus the inheritance of the servus character (absence 
of spot) is clearly denionstrated. The Fi female inherited this servus cha- 
racter through her pure variolarius mother, whosc eggs wcre fertilized by 
the male servus, therefore it was conveyed to them by the so-called feniale- 
producing Spermatozoon of servus. Thus we have evidence from this 
back cross that one of these two exclusively male characters (the genital 
spot) can be transmitted by the male-producing spermatozoa and the 
other male character (the absence of spot) can be transmitted by the 
female-producing spermatozoa, therefore these two tj’pes of spermatozoa 
do not differ functionally in their transmission of an exclusively male 
character, and it may well be questioned whether they differ in their 
transmission of exclusively female characters. 
Appendix 1). 
After this paper was sent to press a notice of our results appearcd 
in the following publications : “Heredity and Sex” — Morgan (13) and 
“Chroniosomes, Heredity and Sex”, Doncaster Q. J. M. Sei. Vol. LIX (14). 
Doncaster disposes of our results in a footnote, as data irrelevant to 
a paper entitled “Chroniosomes, Heredity and Sex — A Eeview of the 
Present State of the Evidence with Regard to the Material Basis of 
Heredity Transmission and Sex-Determination”. 
From his report of the evidence he {h’aws the following conclusion; 
“The facts of sex-limited^) transmission thus Support the hypothesis 
that both ordinary Mendelian factors and the sex-determining factor or 
factors are borne by chroniosomes”, p. 511, and in the above mentioned 
footnote he adds: “The recently published work of Foot and Strobell 
cannot be iised as an argument against this proposition. They have 
slioini (as was previously known in birds and moths) that a secondary 
sexual character in Hemiptera can be transmitted through the sex that 
does not shoiv it; biit the character was not sex-limited^) in transmissicn; 
their results, therefore, have no bearing in the present disciission”. As 
opposed to this decision we Claim that the very fact that the genital spot 
is not linked with one of the so-called sex chroniosomes is a point that 
1) The italics are ours. 
2) Sex4imitecl is used by Doncaster in the sense that sexdinked is used by 
L 
