86 (85) Colored rhabdites lacking, but small uncolored rhabdites in rows; tube-shaped organ lacking; frontal gland 

 present (Figs. 178, 179, 180) Genus Pseudaphanostoma. 



Figure 178. — Pseudaphanostoma variabilis. 



Figure 179. — Pseudaphanostoma pelophilum. 



Figure 180. — Pseudaphanostoma psammophUum. 



87 (2) Flagellar organ present; mouth opening absent (Fig. 181) . 



. Genus Flagellophora. 



Figure \S\.—Hagettophora apelti: a-sagilUi reconstruction; b-base of Hagellar organ next lo inlcsline; c-male accessory organs. 



56 



