Dr. Kassai Tibor - Dr. Murai Éva szerk.: Parasitologia Hungarica 6. (Budapest, 1973)

dor so-sub median papillae (Pig • lC). Spicules 21-22 jti, acute, gubernaculum about 16-18 ,u in length. Habitat: Anisodactylus (Hexatrichus) virens Dej . Locality: Abu-Rawash, Cairo, UAR. 2. Oniticellus (Euoniticellus) pallens Oliv. Several specimens of Oniticellus (Euoniticellus) pallens Oliv. (Coleoptera: Scarabaeidae

) were collected from manure heaps at Mosttord and also from cow-dung at Abu-Rawash on different occasions during a period of 19 months. External and internal examinations showed that of 202 beetles only 121 specimens (59.9 %) were infested with nematodes The nemas appeared considerably crowded under the elytra and cervical membranes. The writer was able to extract 3584 larval parasites from the infested beetles at a mean of 29.6 individuals per beetle. The nematode larvae were reared on several artifical media. After a period of one week, the majority of the incubated larvae reached their adult stages. Microscopic examinations and measurements of males and females showed that they represent two nematode species: Pelodera ser rata (Körner in Osche, 1952) Dougherty, 1955, and Pelodera te res (Schneider, 1366) Dougherty, 1955, whose descriptions follows. (Pig. 21 shows the mating of the former species.) 2-1. Pelodera (Coarctadera

) serrata (Körner in Osche, 1952) Dougherty, 1955 (Fig. 2 ) Females (n = 10); L = 1.075-1.386 mm; a = 14-14.1; b = 5.9-6; c = 17-21: V = 50-61 %. Males (n - 10); L = 1.089-1.168 mm; a = 11.8-16.5; b = 6-6.7; c = 17.4-18.8. Head with 6 lips slightly offset, more so in the female than in 174