40 (39) Frontal organ lacking (Figs. 78, 79) , 



. Genus A/ronta. 



Figure 78. — Afronta aurantiaca, dorsal view 



Figure 79. — Afronta rubra; a-sagillal 

 reconslniction; b-dor^al 

 view of posterior end 



40 (39) Frontal gland present 41 



41 (40) A pair of false seminal vesicles present (Figs. 80, 81) 



.Genus Parahaptoposthia. 



Figure 80. — Parahaptoposthia cerebroepitheliata. 



4 1 (40) Either a true seminal vesicle or a single false seminal vesicle present 



Figure 81. — Parahaptoposthia avesicuta, 



42 



42 (41) Colored by rhabdites or stored body pigment; common germinal center for eggs and sperm (Figs. 82, 83) 

 Genus Haploposthia. 



28 



