Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 71. (Budapest 1979)
Varga, A.: On the genus Hygromia Risso, 1826 (Gastropoda, Helicidae)
Figs. 39-41. Hygromia kovácsi VARGA et PINTÉR, shell: 39 = X 100, 40 = X200, 41 = X600 Some characteristic anatomical data are given in the following table: H. transsylvanica H. deubeli H. kovácsi P short short long wall of P: wall of PP 1:2 3 : 1 1 : 2 surface of PP wrinkled smooth smooth width of PP: lenght of PP 1 : 1 1: 1 1 : 3 inner structure of PP type A type B type B P: E 1 : 3 1 : 3 1 : 2 PR attachment on the E at the first third at the first third before the first third inner structure of the E type C type C type D P : F 1 : 3 1 : 1.2 1 : 2 E : VD 1 :2 1 : 1 1 :2 volumetric ratio of BH and V 2 : 1 2 : 1 1 : 2 volumetric ratio of BH 2 and BH 1 1 : 4 1 : 7 1 : 1.1 entrace of BH 2 into the central cavity into the central cavity into the vagina GM 2 2 4 Figs. 27-30. Hygromia transsylvanica (WESTERLAND), shell: 27 = X 100, 28 = X200, 29 = X480, 30 = X860. — Figs. 31-34. Hygromia deubeli (KIMAKOWICZ), shell (juv.): 31 = X 100, 32 = X200, 33 = X860, 34 = X 1000. — Figs. 35-38. Hygromia deubeli (KIMAKOWICZ), shell: 35 = X 100, 36 = X 200, 37 = X 200, 38 = X 1000