46 (30) Copulatory organ a globular structure inside of which is a proximal seminal vesicle and a distal glandular 

 region which serves as a penis (Figs. 91, 92) Family MECYNOSTOMIDAE (p. 63) 



,47 



Figure 91. — Mecynostomum haplovarium, sagittal section. 



Figure 92. — Pseudmecynoslomum pelophilum: a-dorsal vi«w of posterior end; b-sagittal 

 section of copulatory organ. 



46 (30) Copulatory organ either a conical penis made up of cellular, muscular, or cuticular parts (Fig. 93), or a tube- 

 shaped penis formed by an invagination of the body wall (Fig. 94) 52 



Figure 93. — Aclinoposlhia hapluvata: a-dorsal view of posterior end; b-sagittal 

 section of copulatory organ. 



Figure 94.— Anhaphanostoma macrospirifemm: a-dorsal view of posterior end; b-sagiltal 

 section of copulatory organ. 



31 



