100~m
1--------1
A
c
100~m
B, C, O. E. F, G
Obtusoecia antarctica 197
E
G
Fig. 6.8.1A-G. Obtusoecia antarctica. A shell of adult ovigerous female; B right valve female glands; C male A2 right clasping organ; D male prehensile organ; E female prehensile organ; F penis; G male Al detail of'e' bristle