Coluber radiatus and C. melanurus— Bergman 
147 
TABLE 6 
Coluber radiatus, Number OF EGGS 
BODY LENGTH 
IN MM. 
NUMBER OF EGGS 
Right 
Left 
Total 
1074 
6 
3 
9 
1287... 
5 
2 
7 
1332.. 
4 
3 
7 
1352 
6 
— 
6 
Total n — 4 
21 
8 
29 
v. Heurn. 
8 
Kopstein 
10 
Smith..... 
5 
Smith...... 
12 
Total n — 8 .......... 
64 
except for the kidneys and the caudal pole of 
the left ovary, which are situated more caudally 
in the female. However, to make possible a 
comparison with other snakes, a table contain- 
ing the percentile values has been added. 
LENGTHS: The lengths of the organs are of 
the same order in both sexes, except for the 
gonads: the ovaries are twice as long as the 
testes. There is some asymmetry: in both sexes 
the gonads as well as the kidneys are longer 
on the right side than on the left. 
INTERVALS : The intervals between the organs 
are of the same order in both sexes; in the 
cranial half of the body they are somewhat 
greater in the male. In the caudal half the figures 
are a little higher in the female on the left 
side. On the right side it is especially B 2 , the 
space between the right gonad and the right 
kidney, which is greater in females ( D/o'd = 
4). This is due to the fact that the top of the 
right kidney is more caudally placed in the fe- 
male (Tables 8, 9')- The total amount of free 
space on both sides is the same In both sexes. 
However, if we count only the space from the 
pancreas to the kidney (Dr) on the right side 
and to that (D L ) on the left side, this region, 
where the eggs will develop, is greater in fe- 
males than is the corresponding area in the 
males, amounting to a difference of about 27 
per cent on the right side and 15 per cent on 
the left. 
VARIABILITY: The coefficient of variability 
(V) is low for all topographical data: It is about 
7 in the male series and about 12 in the female. 
In the case of the length of the organs, this 
coefficient is high for the length of the spleen 
in both sexes and for the length of the gonads 
TABLE 7 
Coluber radiatus, $ ADULTS (> 950 mm.), TOPOGRAPHY 
N 
R 
M±trm 
o' ± o a 
V±<w 
Body. 
38 
957-1380 
11 70.0 ±15.2 
94. 0± 10.8 
8.0±0.9 
Tail 
28 
237-351 
287.9±4.7 
24.6±3.3 
8.5 ±1.1 
Heart, top 
27 
199-264 
241.2±2.9 
14.8±2.0 
6.1 ±0.8 
end.. 
27 
231-302 
276.8±3.2 
16.9±2.3 
6.1 ±0.8 
Liver, top 
27 
286-383 
364.3±4.9 
25.2±3.4 
6.9±0.9 
end..... 
27 
471-653 
580.9±7.2 
37.7 =±5.1 
6.5 ±0.9 
Gallbladder, top 
27 
579-832 
708.2±10.1 
52.8±7.2 
7.5 ± 1.0 
end..... 
27 
603-859 
737.0±10.0 
52.3 — 7.1 
7.1 ± 1.0 
Pancreas, top. 
27 
604-856 
734.2±1L2 
58.3±7.9 
7.9± 1.1 
end............... 
27 
620-872 
751.4± 10.2 
5 3.0 ±7.2 
.7.1 ±1.0 
Spleen, top 
27 
601-850 
734.2±8.8 
5 3 -3 ± 7-2 
7.3± 1.0 
end........ 
27 
605-857 
737.0±10.2 
53.1 ±7.2 
7.2 ±1.0 
Sex R, top.. 
27 
688-993 
853.6±12.0 
62.1±8.5 
7.3±1.0 
end..... 
27 
734-1044 
905.3±1L4 
59.4 ±8.1 
6.6±0.9 
Sex L, top 
27 
741-1079 
93 1 3 13.1 
68.0±9.3 
7. 3 ±1.0 
end.. 
27 
776-1138 
975.3±13.3 
69.2±9.4 
111 ±1.0 
Kidney R, top 
27 
782-1149 
990. 8± 12.9 
67.2±9.2 
6.8 ±0.9 
end... 
27 
858-1273 
1090.9±15.4 
80.0 ±10. .9 
7.3 ± 1 .0 
Kidney L, top 
27 
833-1248 
1056.0±14.9 
77.4±10.5 
7.3 ± 1 .0 
end... 
27 
917-1331 
1 150.1 1 5.6 
81.0±11.0 
7.1 ±1.0 
