Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 64. (Budapest 1972)
Satô, M.: Some notes on dytiscoid-beetles from Vietnam (Coleoptera)
8. Hydrovatus subtilis SHARP Hydrovatus subtilis SHARP, 1882. Sei. Trans, B. Dublin Soc. 2: 329. Specimen examined: 1 ex. Prov. Ha-Tinh, forestière Hüöng-sön, 150 m forêt trop, pluv. 14. Vm. 1963, leg. T. PÓCS. Distribution: Thailand, Vietnam. Note : The unique maie specimen may belong to this species, though it has a different point in the median lobe of the male genitalia, narrowing abruptly near the apex. (Pig. 3). Fig. 3. Male genitalia of Hydrovatus subtilis SHARP: A = apical portion of median lobe, dorsal aspect, B = ditto, lateral aspect 9. Guignotus annamita (RÉGIMBART) Bidessus annamita RÉGIMBART, 1889. Ann. Soc. ent. France (6) 9: 153. Specimens examined: 17 exs. Planôi, 40 m l'hôtel, 6. VHI.-31. X. 1963, leg. T. PÓCS; 2 exs. baie d'Ha-lomg, Hông-gai, 0-10 m l'hôtel, 5. IX. 1963, leg. T. Pócs; 1 ex. Prov. Ha-Tinh, forestière Hüöng-sön, 150 m forêt trop. pluv. 18. VIII. 1963, leg. T. Pócs. Distribution: Vietnam. 10. Guignotus flammulatus (SHARP) Bidessus flammulatus SHARP, 1882. Sei. Trans. R. Dublin Soc. 2: 359. Bidessus antennatus RÉGIMBART, 1892. Ann. Soc. ent. Belgique 36: 118. Specimens examined: 31 exs. Hanoi, 40 m l'hôtel, 7. IV.-30. X. 1963, leg. T. Pócs; 6 exs. Prov. Nghe-An forestière Qui-châu, 200 m forêt pluv. trop, semidecid. 23-28. VIII. 1963, leg. T. PÓCS; 3 exs. Lao-cai, 300 m forêt trop, second. 21. IX. 1963, leg. T. Pócs. Distribution: India, W. Pakistan, Vietnam, China. 11. Guignotus fuscipeimis (SHARP) Bidessus fuscipennis SHAKP, 1882. Sei. Trans. R. Dublin Soc. 2: 359. Specimens examined : 2 exs. Prov. Nghe-An, forestière Quy-châu, 200 m forêt pluv. trop, semidecid. 24, 28. VIII. 1963, leg. T. Pócs. 2 exs. Prov. Ha-Tinh, forestière Hüöng-