360 L. MURBACH. 



Fig. 8.— The same (a) with freed blastolyte (b) showing increasing lateral 

 thickening. 



Fig. 9. — 6'. The same blastolyte as b, Fig. 8, showing the increased growth 

 of the lateral thickening, b". Final result of b, Fig. 7. 



Fig. 10. — Portion of hydrocaulus showing perisarcal secretion. 



COKYNITIS AND GbMMAEIA, 



Fio. 11. — Gemmaria gemraosa, representing one tentacle fully ex- 

 panded. 



Fig. 12. — Polyp of Corynitis Agassizii without medusa buds. 



Fig. 13. — («) Capsule of one of the stalked organs, from the tentacle of 

 medusa, showing one nematocyst discharged ; (b) large nematocyst discharged 

 from one of the swellings on the bell. 



Fig. 14. — Portion of tentacle, showing origin of stalked capsules and 

 vacuoles in the axis. 



