Plate I. 



Fig. 1. — Thaumatoscyplnis distinctus. 3 x natural size. Side view. 

 Fig. 2. — Thaumaioscyplms distinctus. 3 x natural size. Oral view. 

 Fig. 3. — Haliclystus tenuis. 3 x natural size. 

 Fig. 4. — Charyhdea mom Natural size. Showing nematocyst.s, grooves, 



and a sensory niche in the exumbrella. 

 Fig. 5. — C/taryhdea mora. Natural size. Showiug manubrium, genital 



glands, nerve ring, thickness of the exumbrella, etc. 

 Fig. 6. — A quadrant of tlie velarium of Charyhdea mora, showing the 



dendritic canals. Magnified. 

 Fig. 7. — Sensory club of Charyhdea mora. Magnified. Side view. 

 Fig. 8. — Pedalium of Charyhdea înora. Natural size. 

 Fig. 9. — Phacellus of Charyhdea mora. 2 x natural size. 

 Fig. 10. — Tamoya virulenta. Natural size. The shape of the sensory niche 



is not correctly represented. 



