Dr. Kassai Tibor - Dr. Murai Éva szerk.: Parasitologia Hungarica 10. (Budapest, 1977)

and intensity of A. tetraptera infection are very high in M. musculus, but lower in other rodents (TENORA 1964, KASSAI and MÉSZÁROS 1968, KARAPCANSKI et al., 1969, PROKOPIC and GENOV 1974). The measurements of A. tetraptera are given in Table 1. Table Measurements of female Aspiculuris tetraptera from different hosts (mm) Author Hall, 1916 Skrjabin et al. , 1960 Yamaguti, 1935 (in Skrjabin et al., 1960) Own material Host various various Rattus r. alexandrinus Apodemus rodents rodents Mus m. mollossinus sylvaticus Body length 2. 58 - 4 2; 58 - 4.75 2.7 - 4. 27 4. 4 Body width 0. 19 - 0.25 0.32 - 0.50 0.15 - 0.21 0. 31 Esophagus 0. 227 - 0. 335 0.335 - 0.500 0. 33 - 0.39 0. 5 Bulb 0.12 - 0.15 0.11 - 0.15 0. 12 - 0.156 0. 16 Nerve ring distance 0.11 - 0. 14 0. 12 Vulva 1.075 - 1.66 1. 45 - 1.6 1. 66 Anus 0. 430 - 0.6 0. 430 - 0.6 0. 33 Eggs 0.034 - 0.04

x 0. 034 - 0.

046x 0. 042- 0.051 X 0. 042 -0.048 x 0. 084o.09 0. 084-0. 096 0. 081-0.09 0. 088 3. Capillaria muns-sylvatici (Diesing, 1851) Locality and host: Oslo (A. sylvaticus); Localization: small intestine; Incidence and intensity: Fragments of one female were found in one of 52 A. sylvaticus examined. TENORA, F. — MÉSZÁROS, F. — WIGER, R.: Adatok Norvégia kisemlősei nematodáinak ismeretéhez Szerzők az Aspiculuris tetraptera (Nitzsch, 1921) és a Capillaria muris-sylvatici (Diesing, 1851) fajokat először mutatták ki Norvégiából. A Syphacia nigeriana Baylis, 1928 a Microtus oeconomus új parazitája ezen a területen. References BARUS, V. - TENORA, F. - WIGER, R. (1977): On further occurrence of some helminths in small terrestrial mammals (Rodentia and Insectivora) from Fennoscandia. - Folia parasit. , in press. BAYLIS, H.A. (1928): On a collection of nematodes from Nigerian mammals (chiefly rodents). - Parasitology _3. 280-304.