1965 Helotholus vema - Hays pl. 2, fig. 3 |
1971 Pseudocubus vema - Petrushevskaya p. 46 |
1975 Helotholus vema - Chen pl. 16, figs. 1-4 |
1976 Helotholus vema - Weaver pl. 1, figs. 10-11 |
1983 Helotholus vema - Weaver pl. 3, figs. 2-4 |
1990 Helotholus vema - Lazarus pl. 7, figs. 1-5 |