\ 



Explanation of Plate II. 



Fig. 1. More posterior section of same series as Plate I, fig. 8, through tlie male atrium. 

 bs, bursa stalk; ma, male atrium ; o, union of oviducts; p, penis; tviiia, wall of 

 the male atrium. 



Fig. 2. Detail of the wall of the penis bulb of same section as figure 7, showing the granule- 

 filled ducts projecting through the lining epithelium. 



Fig. 3. Sagittal section of the copulatory apparatus of one of the K 78 specimens, recon- 

 structed from several sections. The penis bulb is contracted forcing the seminal 

 vesicle into the penis, be, bursa copulatrix; co, common oviduct; gp, genital 

 pore; p, penis; pb, penis bulb; 7'rf, vas deferens. 



Fig. 4. Diagram of the copulatory apparatus seen from the dorsal side, be, bursa ci>pulatrix ; 

 CO, common oviduct; via, male atrium; p, ])enis; pb. penis bull); .?<', seminal 

 vesicle; ty/, vas deferens. 



Fig. 5. Largest specimen of the second species, ? Euplaiiaria, from lot K 64. 



Figs. 6, 7. The two other specimens of lot K 64, showing four eyes. 



