216 
I have since examined the fins of 250 more specimens of Etheostoma caprodes 
from Turkey Lake and 1,175 more specimens from Tippecanoe Lake. The data 
for these are combined with those previously described and given in the tables 
below. In addition, the nape and fins of 500 specimens of Etheostoma nigrum from 
Tippecanoe Lake and 100 specimens from Turkey Lake have been examined. 
The sex has been determined in most of this material, so that a comparison of the 
proportion of the sexes in the two lakes can be made. 
a. ETHEOSTOMA CAPRODES. 
1. Proportion of Sexes.—The proportion of the sexes in the two lakes will be 
found in Table IV. In all the broods, excepting the broods of 935 of both lakes, 
the males are in the majority. In Turkey Lake this majority is greater than in 
Tippecanoe Lake. In the latter the mean per cent. of males is 55.44 and the 
females 44.56. In Turkey Lake the mean per cent. of males is 63.96 and of females 
36.04. The broods of ’93° are not included in the latter because this group con- 
tains many females of preceding broods that have survived the males or outdone 
them in growth. Thus all of the larger specimens of this group are females. One 
can be quite sure when he meets an exceptionally large and aged-looking specimen 
that it isa female. The broods of 93°, determined solely by the size of the speci- 
mens, ought therefore to show an abnormal per cent. of females and should not 
be taken to determine the true proportion of the sexes. 
TABLE IV. 
be Sp Turkey Lake. 
NUMBER OF SPECIMENS. : 
Male. | Female.|| Male. ; Female. 
S82, specimetis, bTOOd “96S. 2.5.0.0 inseam > ee 58.48 Mee yale bw cll he ee) Orta 
HAS speeimions, ROO "9D°re <4. Yl! aster © = 02's 5248) 47 rae. 03]. eee 
280: SPeeINEHS, DIGOG, 290°... 65a 0) 0 a earesela dana 0 4 ia 1 eS | eg or son oo 
MUGS pecitens, PLOW (IO. areas oops «ce spears. 62 6] oesidye «fovea senile 62.60 37.40 
PALI BPOCIOLEOE, TOTOOD) DAS 5.35). so» sia Helps) oles 0.0 ele dio [wean lermen 65.32 34.68 
BLS SPECUNENA \ LOOM y Gore haus Vie asin «intdleta'ar\a'o\oin| » aidetore dione: eaatatece 45.62 54.38 
2. Squamation of Nape.—Table V represents the data for the squamation of 
the nape of 600 specimens from Turkey Lake and 300 specimens from Tippecanoe 
Lake. Eighty-eight per cent. have the nape naked in Turkey Lake and only 19 
per cent. from Tippecanoe Lake. Twenty-eight per cent. from the latter lake 
have scales over the entire nape. 
