EXPI^ANATION OF PlyATE X. 



Fig. 17. Cylindr orchis tenuicutis, n. sp. Entire worm, X 7. 

 „ 18. Same. From a dissection, X 7. 

 „ 19. * Distomum sp.' Entire worm, X 9"5. 



EXPLANATION OF LETTERING. 



B. Vitteline glands. E. Testes. 



C. Uterus. G. Intestine. 



