REVISION OF SIMOCEPHALUS DAPHNIIDAE 

Fig. 14S. vetulus, male postabdomen. A, lateral view, B, distal part, C, supra-anal angle with vas deferens. 
Diameter of circle inscribed in it large. Dorsal valve margin low, not 
protruding backward. Ventral head margin straight or slightly con- 
cave, sometimes with small prominence. Depression on ventral head 
margin near rostrum deep. Ocellus point-like. 
ETYMOLOGY. The name ‘punctatus’ refers to the point-like ocellus 
that is typical of this species. 
REMARKS. The shapes of the head and valves are similar in S. 
punctatus and S. vetulus. The former species differs distinctly from 
the latter, and from all other species of this subgenus, in the shape of 
the ocellus, which is point-like in all available specimens of S. 
punctatus. 
S. gibbosus Sars, 1896 
Fig. 26 
Simocephalus gibbosus Sars, 1896: 15;S. vetulus gibbosus: Dumont, 
1983: 102. 
TYPE MATERIAL. Lectotype (designated here): Australia, Sydney, 
Centennial park: CBS: 9 ad. (ZMO,F 9766, Mp. 170). Paralectotypes 
collected with lectotype: 5 9 9 ad. (ZMO, F 9766, Mp. 170), MPA: 
15 2 Qad. (ZMO, F 19261). 
MATERIAL EXAMINED (Fig. 21). Lectotype, paralectotypes and 
other specimens: more than 250 specimens (Q Q ad. and 9 9 juv.) 
