Dr. Kassai Tibor - Dr. Murai Éva szerk.: Parasitologia Hungarica 7. (Budapest, 1974)

der of the model area. The traps were observed in every three hours day and night, the captured mammals taken out and the traps set again. Within two days 23 Apodemus flavicollis, 14 Apodemus agrárius, 11 Sorex araneus and 7 Clethrionomys glareolus were collected. Of the marked and liberated mammals 8 A. flavicollis, 8 A. agrárius and 5 S. araneus were captured again later on, some of them also several times. In this manner a total of 59 flea specimens were collected representing the following species. Hystrichopsyllidae Hystrichopsylla talpae orientális Smit Host: Apodemus agrárius, 2 November: 1 9 The largest in size in our fauna, not particularly favouring any of the host species. It was found in every sizable home collection, and was expected also at Síkfőkút. Doratopsylla dasycnema dasycnema (Rothschild) Host: Sorex araneus, 1 November: 1 6*, 2$, 2 November: 7 c*, 3 9. One of the specific of shrews,known from hilly and mountainous regions only. Ctenophthalmus agyrtes peuslanus Rosicky Host: Apodemus flavicollis, 1 Hovember: 19; 2 November: 1 6*. Host: Apodemus agrárius, 1 November: 1 o. Of the four subspecies of Ct

. agyrtes living in Hungary, the above one is known from the Northern-Central Range of Mountains; east of them its variations mixed with Ct

. agyrtes kleinschmid- tianus Reus and south of them with Ct

. agyrtes eurous Jordan and Rothschild also occur, while no such relationship with Ct

. agyrtes bosnicus Wagner, inhabiting the western part of the country has been revealed (SMIT and SZABÓ,1967). The subspecies of Ct

. agyrtes are the most frequent fleas on home small mam-