31 (30) Male organ consists of a ciliated male antrum which is 

 inserted at its proximal end into a sheath or sac in such 

 a way that it opens directly from an unciliated granular 

 vesicle with either a true or false seminal vesicle present 



(Fig. 55) 



FamUy ANTROPOSTHIIDAE (p. 64) ... . 



.43 



Figure 55. — Convoluella bnmea. 



32 (31) Male organ with a very small penis. Two species, Haploposthia rubra (Fig. 50) and Haploposthia ( = Kurnal) 

 albiventer (Fig. 86) with other characters which have placed them in the Family Haploposthiidae have very 

 small penes. Paranaperus pellucidus (Fig. 41) with a very small penis and small adenodactyls appears to be 

 taxonomically intermediate between the Family Anaperidae and the Family Haploposthiidae. 



32 (31) Penis lacking (Figs. 56, 57, 58); often with a tube-shaped male antrum which is not inserted into a sheath or 

 sac (Figs. 57, 58) Family HAPLOPOSTHIIDAE (p. 60) 



33 





Figure 56. — Pseudohaplogonaria vacua. Figure 57. — Kama monogonophora, dorsal view of posterior end. 



Figure 58'. — Parahaplogonaria maxima. 



33 (32) Seminal bursa present either with a distinct wall (Fig. 59) or as a more or less well-defined vacuolated or syn- 

 cytial space in the parenchyma (Fig. 60) 34 



Figure 59. — Haplogonaria elegans. ^ 



Figure 60. — Pseudohaplogonaria vacua. 



33 (32) Seminal bursa lacking 38 



23 



