Glass 1. Nematoda. 



161 



Fig. 121. 

 A B 



Fig. 122. 



Fig. 124. 



Kg. 123. 



Fig. 121. Intestinal • Trichina, A ^,B g. — After Leuckart. 



Fig. 122. Muscle-Trichina lying in its oapsnle. — Orig. 



Fig. 123. Dochmius duodenalis, J. <? , B if .—After Leuokart. 



Fig. 124. Vilaria Tnedinends (Guinea-wovm). Natural size. — After Leuckart. 



M 



