Hirudisomatid Millipeds 
115 
Table 1. Segment Numbers and Average Lengths (mm) of O. bivirgata (samples 
at one locality are combined; lengths averaged for individuals with same seg- 
ment number, n in parentheses). 
Males Females 
County 
Locality 
Segs. 
Lengths 
Segs. 
Lengths 
Humboldt, 
CA 
■’R 
2 mi E 
55 
19.1 
58 
19.7 
Trinidad 
46 
12.2 
51 
15.3 
Humboldt, 
CA 
2.5 mi S 
Blue Lake 
49 
15.6 
Humboldt, 
CA 
Areata 
44 
13.2 
(2) 50 
14.8 
43 
12.3 
49 
15.0 
42 
11.9 
41 
9.2 
(2) 38 
8.7 
37 
8.2 
Humboldt, 
CA 
2.75 mi NE 
50 
12.4 
52 
16.9 
Orleans 
(2) 45 
11.0 
48 
12.8 
41 
9.1 
45 
15.3 
34 
5.4 
39 
9.1 
28 
4.7 
38 
8.3 
36 
7.1 
Humboldt, 
CA 
11 mi W 
Willow Creek 
41 
9.1 
Humboldt, 
CA 
3.5 mi “up” 
Fickle Hill Rd. 
41 
15.1 
Humboldt, 
CA 
Redcrest 
(2) 43 
11.9 
34 
8.7 
(2) 39 
11.6 
33 
8.2 
33 
7.3 
(2) 24 
4.4 
30 
5.3 
(2) 23 
4.3 
28 
5.0 
(3) 18 
2.6 
17 
2.5 
12 
1.7 
Humboldt, 
CA 
4.5 mi N 
41 
10.3 
40 
11.6 
Pepperwood 
39 
9.8 
38 
11.2 
24 
4.0 
37 
9.1 
36 
8.1 
34 
7.0 
Humboldt, 
CA 
Weitchpec 
(3) 40 
9.7 
40 
9.0 
39 
9.0 
39 
9.5 
