JOURNAL OF MICROSCOPICAL SCIENCE. 



DESCRIPTION OF PLATE VIII, 



Cdouard Van BeiK 

 Nematobothriuin. 



Illustrating Dr. Edouard Van Beneden's Memoir on 



Fig. 



1. — Embryo of Nematobothrium, magnified 450 diameters. 



2. — An egg enclosing an embryo bent on itself, magnified 450 diameters. 



3. — An egg, magnified 450 diameters, to show the mode of dehiscence. 



4 & 5. — The embryo of the same, magnified 600 (4) and 650 (5) diameters. 



6. — An embryo as it is when folded up in the egg, magnified 600 diameters. 



7 & 8. — Muscular disc of the same, under a power of 1200 diameters. 



9. — Portion of the muscular disc of another individual ; the booklets are 

 both shorter and stronger than those of the individuals represented 

 iu figs. 7 and 8. 



10. — The egg of Dlstoma tereticolle. The chorion is surrounded by a thick 

 layer of transparent substance. 



11 & 12. — Embryo of the same, highly magnified. 



13&14. — Embryo oi Distoma JilicoUe. The division of the body into two 

 rings, by a circular furrow, is distinguishable. There is no trace of 

 prickles. 



