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

4. INGLIS (1959) regards genus Eugenuris as synonym of Labio stomum on the basis of cuticular structures of the anterior end. SCHNEIDER'

s

(1866) diagnosis of Dermatoxys is very simple, still it includes the most important features stated by SCHULZ (1948) for Eugenuris

, that is: three lips, lateral alae, structure of the male tail end with tooth-like projections arranged in lines. True,

SCHULZ speaks only of six denticles around the mouthopening without mentioning the number of lips

. As it can be judged from his Pig. Ho. 1/2 on page 174, however, there were three lips on his specimens. Some authors speak of six lips around the mouth-opening (AKHTAR, 1956; BARUS, KULLMAHH and TENORA, 1972). Possibly they regard the six chitinized denticles as lips (see BARUS, KULLMANH and TENORA, 1972, page l6, Pig. 6A). Soviet authors (GVOZDEV et al. 1970), as well as ERHARDOVÁ-K0TRLÁ and DANIEL (1970) speak of three lips. In SCHULZ's description no tooth-like cuticular structures arranged in lines on the tail end of male is mentionned. This author probably overlooked these structures or regarded them as non-essential. All subsequent works mention these structures. In the light of our present knowledge

,the view concerning the synonymy of Euge nuris with Dermatoxys appears to be correct, while the genera Dermatoxys and Labiostomum are very close allies. Until now C. andre

jevi and L. vesicularis were not known from Mongolia. In the neighbouring areas (the Asiatic part of the Soviet Union), however, C. andrejevi

, D. schumakovitschi and L_. vesiculare are to be found nearly every where, where various species of Ochotona occur (SPASSKY and RYZHIKOV, 1951; DUBININ and DUBININA, 1951; SPASSKY, RYZHIKOV and SUDARIKOV, 1952; MATSHULSKY, 1959; TOKOBAEV

, 1959; GVOZDEV, 1956,1962, 1964; GVOZDEV and 0V0D0V, 1966; TOKOBAEV and ERKULOV, 1966; GVOZDEV et al., 1970; BABAEV and SAPARGELDYEV

, 1970; SALDYBIN, 1970; GUBANOV, 1964; JUSHKOV, 1971). It is interesting to note that some species described from Iran and Pakistan, as L

. akhtari Inglis, 1959, L

. naimi Akhtar, 1941, C. chabaudi Inglis, 1959, occur also in the Soviet Union, while the present three species were