678 ^^- Gr. MacCalluji, On tvvo new Aniphistome parasites of Sumatran fishes. 



CladorcJiis helostoniafis n. sp. 



Body truncated posteriorly, iiarrowed anteriorly, measurements 

 3 X 1;5 mm, larg-e posterior sucker with sinuous margins; ventral 

 genital opening anteriorly placed near mouth-sucker and provided 

 with muscular ring. Laueer's canal opens medially in front of 

 median excretory opening. Testes side by side, little or not at all 

 lobnlated. Oesophagus club-shaped. muscular, buccal pouches very 

 large and convoluted. 



