PLATE IV. 
1. Eucirripathes Rumphii v. Pesch. Mesenterial filament; 740 X- 
2. Eucirripathes Rumphii v. Pesch. Ripe testis-follicle; 740 X. 
3. Eucirripathes Rumphii v. Pesch. Vertical cross-section through the bodywall, connecting septum 
and axis-epithelium; 322 X. 
4. Eucirripathes Rumphii v. Pesch. Horizontal section through a primary transversal mesentery with 
testes; the entoderm is omitted for the greater part; 322 X. 
5. Eucirripathes Rumphii v. Pesch. Tangential section through nematocyst-batteries out of the ten¬ 
tacular ectoderm; 740 X. 
6. Eucirripathes Rumphii v. Pesch. Longitudinal section through a nematocyst-battery out of the 
tentacular ectoderm; 740 X. 
