732 EXPLANATION OF THE PLATES. 



FIG. 



20. Necklace of eggs. Vol. III. p. 67. 



21. Egg of Tipula oleracea. (Reaum.) 



22. Ophion luteum. (De Geer.) Vol. IV. p. 213 — . 



23. ■ Nepa cinerea. (Swamm.) 



24. Jelly, with a necklace of eggs running in a spiral direc- 



tion from end to end, taken out of the water. 



25. Jelly of more consistence, enveloping the eggs of Phry- 



ganea atrata. Vol, III. p. 68. 



Printed by Richard Taylor, 

 Shoe-Lane, London. 



