M.J. ORLOVA-BIENKOWSKAJA 

Fig. 3 
setules. Postabdominal claws long (Fig. 1:pc), slightly curved, with 
2 rows of setules and/or spines on concave side. Anus (Fig. |:ab) in 
anal bay. 
Abdomen with 2 processes (Fig. 1:pap,dap). 
Male 
Dorsal valve margin straight (Fig. 3A), ventral margin with an 
embayment anteriorly. Head pores larger, antennules shorter and 
S. vetulus. A, male, B, parthenogenetic female attached to a surface, C, 
ephippial female. 
more distended than in female (Fig. 6B), with 2 sensory papillae 
proximally. First and second trunk limbs (Figs 8B,C; 13) differ 
from corresponding limbs of female in several details (Orlova- 
Bienkowskaja, 1993b) (Figs 8A and C). Postabdomen narrower 
than in female (Fig. 14A). Vas deferens opening on supra- 
anal angle (Fig. 14B,C) or distally. Fewer anal teeth than in fe- 
male. 
Abdominal processes absent. 
